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Diffstat (limited to 'srcs/wordpress/wp-includes/functions.php')
| -rw-r--r-- | srcs/wordpress/wp-includes/functions.php | 7403 |
1 files changed, 7403 insertions, 0 deletions
diff --git a/srcs/wordpress/wp-includes/functions.php b/srcs/wordpress/wp-includes/functions.php new file mode 100644 index 0000000..939ed50 --- /dev/null +++ b/srcs/wordpress/wp-includes/functions.php @@ -0,0 +1,7403 @@ +<?php +/** + * Main WordPress API + * + * @package WordPress + */ + +require( ABSPATH . WPINC . '/option.php' ); + +/** + * Convert given MySQL date string into a different format. + * + * `$format` should be a PHP date format string. + * 'U' and 'G' formats will return a sum of timestamp with timezone offset. + * `$date` is expected to be local time in MySQL format (`Y-m-d H:i:s`). + * + * Historically UTC time could be passed to the function to produce Unix timestamp. + * + * If `$translate` is true then the given date and format string will + * be passed to `wp_date()` 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|false Formatted date string or sum of Unix timestamp and timezone offset. + * False on failure. + */ +function mysql2date( $format, $date, $translate = true ) { + if ( empty( $date ) ) { + return false; + } + + $datetime = date_create( $date, wp_timezone() ); + + if ( false === $datetime ) { + return false; + } + + // Returns a sum of timestamp with timezone offset. Ideally should never be used. + if ( 'G' === $format || 'U' === $format ) { + return $datetime->getTimestamp() + $datetime->getOffset(); + } + + if ( $translate ) { + return wp_date( $format, $datetime->getTimestamp() ); + } + + return $datetime->format( $format ); +} + +/** + * Retrieves the current time based on specified type. + * + * The 'mysql' type will return the time in the format for MySQL DATETIME field. + * The 'timestamp' type will return the current timestamp or a sum of timestamp + * and timezone offset, depending on `$gmt`. + * 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 ) { + // Don't use non-GMT timestamp, unless you know the difference and really need to. + if ( 'timestamp' === $type || 'U' === $type ) { + return $gmt ? time() : time() + (int) ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ); + } + + if ( 'mysql' === $type ) { + $type = 'Y-m-d H:i:s'; + } + + $timezone = $gmt ? new DateTimeZone( 'UTC' ) : wp_timezone(); + $datetime = new DateTime( 'now', $timezone ); + + return $datetime->format( $type ); +} + +/** + * Retrieves the current time as an object with the timezone from settings. + * + * @since 5.3.0 + * + * @return DateTimeImmutable Date and time object. + */ +function current_datetime() { + return new DateTimeImmutable( 'now', wp_timezone() ); +} + +/** + * Retrieves the timezone from site settings as a string. + * + * Uses the `timezone_string` option to get a proper timezone if available, + * otherwise falls back to an offset. + * + * @since 5.3.0 + * + * @return string PHP timezone string or a ±HH:MM offset. + */ +function wp_timezone_string() { + $timezone_string = get_option( 'timezone_string' ); + + if ( $timezone_string ) { + return $timezone_string; + } + + $offset = (float) get_option( 'gmt_offset' ); + $hours = (int) $offset; + $minutes = ( $offset - $hours ); + + $sign = ( $offset < 0 ) ? '-' : '+'; + $abs_hour = abs( $hours ); + $abs_mins = abs( $minutes * 60 ); + $tz_offset = sprintf( '%s%02d:%02d', $sign, $abs_hour, $abs_mins ); + + return $tz_offset; +} + +/** + * Retrieves the timezone from site settings as a `DateTimeZone` object. + * + * Timezone can be based on a PHP timezone string or a ±HH:MM offset. + * + * @since 5.3.0 + * + * @return DateTimeZone Timezone object. + */ +function wp_timezone() { + return new DateTimeZone( wp_timezone_string() ); +} + +/** + * Retrieves the date in localized format, based on a sum of Unix timestamp and + * timezone offset in seconds. + * + * 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. + * + * Note that due to the way WP typically generates a sum of timestamp and offset + * with `strtotime()`, it implies offset added at a _current_ time, not at the time + * the timestamp represents. Storing such timestamps or calculating them differently + * will lead to invalid output. + * + * @since 0.71 + * @since 5.3.0 Converted into a wrapper for wp_date(). + * + * @global WP_Locale $wp_locale WordPress date and time locale object. + * + * @param string $format Format to display the date. + * @param int|bool $timestamp_with_offset Optional. A sum of Unix timestamp and timezone offset + * in seconds. Default false. + * @param bool $gmt Optional. Whether to use GMT timezone. Only applies + * if timestamp is not provided. Default false. + * @return string The date, translated if locale specifies it. + */ +function date_i18n( $format, $timestamp_with_offset = false, $gmt = false ) { + $timestamp = $timestamp_with_offset; + + // If timestamp is omitted it should be current time (summed with offset, unless `$gmt` is true). + if ( ! is_numeric( $timestamp ) ) { + $timestamp = current_time( 'timestamp', $gmt ); + } + + /* + * This is a legacy implementation quirk that the returned timestamp is also with offset. + * Ideally this function should never be used to produce a timestamp. + */ + if ( 'U' === $format ) { + $date = $timestamp; + } elseif ( $gmt && false === $timestamp_with_offset ) { // Current time in UTC. + $date = wp_date( $format, null, new DateTimeZone( 'UTC' ) ); + } elseif ( false === $timestamp_with_offset ) { // Current time in site's timezone. + $date = wp_date( $format ); + } else { + /* + * Timestamp with offset is typically produced by a UTC `strtotime()` call on an input without timezone. + * This is the best attempt to reverse that operation into a local time to use. + */ + $local_time = gmdate( 'Y-m-d H:i:s', $timestamp ); + $timezone = wp_timezone(); + $datetime = date_create( $local_time, $timezone ); + $date = wp_date( $format, $datetime->getTimestamp(), $timezone ); + } + + /** + * Filters the date formatted based on the locale. + * + * @since 2.8.0 + * + * @param string $date Formatted date string. + * @param string $format Format to display the date. + * @param int $timestamp A sum of Unix timestamp and timezone offset in seconds. + * Might be without offset if input omitted timestamp but requested GMT. + * @param bool $gmt Whether to use GMT timezone. Only applies if timestamp was not provided. + * Default false. + */ + $date = apply_filters( 'date_i18n', $date, $format, $timestamp, $gmt ); + + return $date; +} + +/** + * Retrieves the date, in localized format. + * + * This is a newer function, intended to replace `date_i18n()` without legacy quirks in it. + * + * Note that, unlike `date_i18n()`, this function accepts a true Unix timestamp, not summed + * with timezone offset. + * + * @since 5.3.0 + * + * @param string $format PHP date format. + * @param int $timestamp Optional. Unix timestamp. Defaults to current time. + * @param DateTimeZone $timezone Optional. Timezone to output result in. Defaults to timezone + * from site settings. + * @return string|false The date, translated if locale specifies it. False on invalid timestamp input. + */ +function wp_date( $format, $timestamp = null, $timezone = null ) { + global $wp_locale; + + if ( null === $timestamp ) { + $timestamp = time(); + } elseif ( ! is_numeric( $timestamp ) ) { + return false; + } + + if ( ! $timezone ) { + $timezone = wp_timezone(); + } + + $datetime = date_create( '@' . $timestamp ); + $datetime->setTimezone( $timezone ); + + if ( empty( $wp_locale->month ) || empty( $wp_locale->weekday ) ) { + $date = $datetime->format( $format ); + } else { + // We need to unpack shorthand `r` format because it has parts that might be localized. + $format = preg_replace( '/(?<!\\\\)r/', DATE_RFC2822, $format ); + + $new_format = ''; + $format_length = strlen( $format ); + $month = $wp_locale->get_month( $datetime->format( 'm' ) ); + $weekday = $wp_locale->get_weekday( $datetime->format( 'w' ) ); + + for ( $i = 0; $i < $format_length; $i ++ ) { + switch ( $format[ $i ] ) { + case 'D': + $new_format .= addcslashes( $wp_locale->get_weekday_abbrev( $weekday ), '\\A..Za..z' ); + break; + case 'F': + $new_format .= addcslashes( $month, '\\A..Za..z' ); + break; + case 'l': + $new_format .= addcslashes( $weekday, '\\A..Za..z' ); + break; + case 'M': + $new_format .= addcslashes( $wp_locale->get_month_abbrev( $month ), '\\A..Za..z' ); + break; + case 'a': + $new_format .= addcslashes( $wp_locale->get_meridiem( $datetime->format( 'a' ) ), '\\A..Za..z' ); + break; + case 'A': + $new_format .= addcslashes( $wp_locale->get_meridiem( $datetime->format( 'A' ) ), '\\A..Za..z' ); + break; + case '\\': + $new_format .= $format[ $i ]; + + // If character follows a slash, we add it without translating. + if ( $i < $format_length ) { + $new_format .= $format[ ++$i ]; + } + break; + default: + $new_format .= $format[ $i ]; + break; + } + } + + $date = $datetime->format( $new_format ); + $date = wp_maybe_decline_date( $date ); + } + + /** + * Filters the date formatted based on the locale. + * + * @since 5.3.0 + * + * @param string $date Formatted date string. + * @param string $format Format to display the date. + * @param int $timestamp Unix timestamp. + * @param DateTimeZone $timezone Timezone. + * + */ + $date = apply_filters( 'wp_date', $date, $format, $timestamp, $timezone ); + + return $date; +} + +/** + * Determines if the date should be declined. + * + * If the locale specifies that month names require a genitive case in certain + * formats (like 'j F Y'), the month name will be replaced with a correct form. + * + * @since 4.4.0 + * + * @global WP_Locale $wp_locale WordPress date and time locale object. + * + * @param string $date Formatted date string. + * @return string The date, declined if locale specifies it. + */ +function wp_maybe_decline_date( $date ) { + global $wp_locale; + + // i18n functions are not available in SHORTINIT mode + if ( ! function_exists( '_x' ) ) { + return $date; + } + + /* + * translators: If months in your language require a genitive case, + * translate this to 'on'. Do not translate into your own language. + */ + if ( 'on' === _x( 'off', 'decline months names: on or off' ) ) { + + $months = $wp_locale->month; + $months_genitive = $wp_locale->month_genitive; + + /* + * Match a format like 'j F Y' or 'j. F' (day of the month, followed by month name) + * and decline the month. + */ + if ( preg_match( '#\b\d{1,2}\.? [^\d ]+\b#u', $date ) ) { + foreach ( $months as $key => $month ) { + $months[ $key ] = '# ' . preg_quote( $month, '#' ) . '\b#u'; + } + + foreach ( $months_genitive as $key => $month ) { + $months_genitive[ $key ] = ' ' . $month; + } + + $date = preg_replace( $months, $months_genitive, $date ); + } + + /* + * Match a format like 'F jS' or 'F j' (month name, followed by day with an optional ordinal suffix) + * and change it to declined 'j F'. + */ + if ( preg_match( '#\b[^\d ]+ \d{1,2}(st|nd|rd|th)?\b#u', trim( $date ) ) ) { + foreach ( $months as $key => $month ) { + $months[ $key ] = '#\b' . preg_quote( $month, '#' ) . ' (\d{1,2})(st|nd|rd|th)?\b#u'; + } + + foreach ( $months_genitive as $key => $month ) { + $months_genitive[ $key ] = '$1 ' . $month; + } + + $date = preg_replace( $months, $months_genitive, $date ); + } + } + + // Used for locale-specific rules + $locale = get_locale(); + + if ( 'ca' === $locale ) { + // " de abril| de agost| de octubre..." -> " d'abril| d'agost| d'octubre..." + $date = preg_replace( '# de ([ao])#i', " d'\\1", $date ); + } + + return $date; +} + +/** + * Convert float number to format based on the locale. + * + * @since 2.3.0 + * + * @global WP_Locale $wp_locale WordPress date and time locale object. + * + * @param float $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; + + if ( isset( $wp_locale ) ) { + $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] ); + } else { + $formatted = number_format( $number, absint( $decimals ) ); + } + + /** + * Filters the number formatted based on the locale. + * + * @since 2.8.0 + * @since 4.9.0 The `$number` and `$decimals` parameters were added. + * + * @param string $formatted Converted number in string format. + * @param float $number The number to convert based on locale. + * @param int $decimals Precision of the number of decimal places. + */ + return apply_filters( 'number_format_i18n', $formatted, $number, $decimals ); +} + +/** + * Convert number of bytes largest unit bytes will fit into. + * + * It is easier to read 1 KB than 1024 bytes and 1 MB 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( + 'TB' => TB_IN_BYTES, + 'GB' => GB_IN_BYTES, + 'MB' => MB_IN_BYTES, + 'KB' => KB_IN_BYTES, + 'B' => 1, + ); + + if ( 0 === $bytes ) { + return number_format_i18n( 0, $decimals ) . ' B'; + } + + foreach ( $quant as $unit => $mag ) { + if ( doubleval( $bytes ) >= $mag ) { + return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit; + } + } + + return false; +} + +/** + * Convert a duration to human readable format. + * + * @since 5.1.0 + * + * @param string $duration Duration will be in string format (HH:ii:ss) OR (ii:ss), + * with a possible prepended negative sign (-). + * @return string|false A human readable duration string, false on failure. + */ +function human_readable_duration( $duration = '' ) { + if ( ( empty( $duration ) || ! is_string( $duration ) ) ) { + return false; + } + + $duration = trim( $duration ); + + // Remove prepended negative sign. + if ( '-' === substr( $duration, 0, 1 ) ) { + $duration = substr( $duration, 1 ); + } + + // Extract duration parts. + $duration_parts = array_reverse( explode( ':', $duration ) ); + $duration_count = count( $duration_parts ); + + $hour = null; + $minute = null; + $second = null; + + if ( 3 === $duration_count ) { + // Validate HH:ii:ss duration format. + if ( ! ( (bool) preg_match( '/^([0-9]+):([0-5]?[0-9]):([0-5]?[0-9])$/', $duration ) ) ) { + return false; + } + // Three parts: hours, minutes & seconds. + list( $second, $minute, $hour ) = $duration_parts; + } elseif ( 2 === $duration_count ) { + // Validate ii:ss duration format. + if ( ! ( (bool) preg_match( '/^([0-5]?[0-9]):([0-5]?[0-9])$/', $duration ) ) ) { + return false; + } + // Two parts: minutes & seconds. + list( $second, $minute ) = $duration_parts; + } else { + return false; + } + + $human_readable_duration = array(); + + // Add the hour part to the string. + if ( is_numeric( $hour ) ) { + /* translators: %s: Time duration in hour or hours. */ + $human_readable_duration[] = sprintf( _n( '%s hour', '%s hours', $hour ), (int) $hour ); + } + + // Add the minute part to the string. + if ( is_numeric( $minute ) ) { + /* translators: %s: Time duration in minute or minutes. */ + $human_readable_duration[] = sprintf( _n( '%s minute', '%s minutes', $minute ), (int) $minute ); + } + + // Add the second part to the string. + if ( is_numeric( $second ) ) { + /* translators: %s: Time duration in second or seconds. */ + $human_readable_duration[] = sprintf( _n( '%s second', '%s seconds', $second ), (int) $second ); + } + + return implode( ', ', $human_readable_duration ); +} + +/** + * 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 = gmdate( '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 + 1 week - 1 second. + $end = $start + WEEK_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 + // Also the world will end. See WP 3.6.1. + 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( $post_links ); +} + +/** + * Check content for video and audio links to add as enclosures. + * + * Will not add enclosures that have already been added and will + * remove enclosures that are no longer in the post. This is called as + * pingbacks and trackbacks. + * + * @since 1.5.0 + * @since 5.3.0 The `$content` parameter was made optional, and the `$post` parameter was + * updated to accept a post ID or a WP_Post object. + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @param string $content Post content. If `null`, the `post_content` field from `$post` is used. + * @param int|WP_Post $post Post ID or post object. + * @return null|bool Returns false if post is not found. + */ +function do_enclose( $content = null, $post ) { + global $wpdb; + + // @todo Tidy this code and make the debug code optional. + include_once( ABSPATH . WPINC . '/class-IXR.php' ); + + $post = get_post( $post ); + if ( ! $post ) { + return false; + } + + if ( null === $content ) { + $content = $post->post_content; + } + + $post_links = array(); + + $pung = get_enclosed( $post->ID ); + + $post_links_temp = wp_extract_urls( $content ); + + foreach ( $pung as $link_test ) { + // Link is no longer in post. + if ( ! in_array( $link_test, $post_links_temp, true ) ) { + $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 we haven't pung it already. + if ( ! in_array( $link_test, $pung, true ) ) { + $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; + } + } + } + + /** + * Filters the list of enclosure links before querying the database. + * + * Allows for the addition and/or removal of potential enclosures to save + * to postmeta before checking the database for existing enclosures. + * + * @since 4.4.0 + * + * @param array $post_links An array of enclosure links. + * @param int $post_ID Post ID. + */ + $post_links = apply_filters( 'enclosure_links', $post_links, $post->ID ); + + 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 ) . '%' ) ) ) { + + $headers = wp_get_http_headers( $url ); + if ( $headers ) { + $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, true ) ) { + add_post_meta( $post->ID, 'enclosure', "$url\n$len\n$mime\n" ); + } + } + } + } +} + +/** + * 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__, '2.7.0' ); + } + + $response = wp_safe_remote_head( $url ); + + if ( is_wp_error( $response ) ) { + return false; + } + + return wp_remote_retrieve_headers( $response ); +} + +/** + * Determines whether the publish date of the current post in the loop is different + * from the publish date of the previous post in the loop. + * + * For more information on this and similar theme functions, check out + * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ + * Conditional Tags} article in the Theme Developer Handbook. + * + * @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 + * @link https://secure.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 https://secure.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, $ret ); +} + +/** + * Retrieves a modified URL query string. + * + * You can rebuild the URL and append query variables to the URL query by using this function. + * There are two ways to use this function; either a single key and value, or an associative array. + * + * Using a single key and value: + * + * add_query_arg( 'key', 'value', 'http://example.com' ); + * + * Using an associative array: + * + * add_query_arg( array( + * 'key1' => 'value1', + * 'key2' => 'value2', + * ), 'http://example.com' ); + * + * Omitting the URL from either use results in the current URL being used + * (the value of `$_SERVER['REQUEST_URI']`). + * + * Values are expected to be encoded appropriately with urlencode() or rawurlencode(). + * + * Setting any query variable's value to boolean false removes the key (see remove_query_arg()). + * + * Important: The return value of add_query_arg() is not escaped by default. Output should be + * late-escaped with esc_url() or similar to help prevent vulnerability to cross-site scripting + * (XSS) attacks. + * + * @since 1.5.0 + * @since 5.3.0 Formalized the existing and already documented parameters + * by adding `...$args` to the function signature. + * + * @param string|array $key Either a query variable key, or an associative array of query variables. + * @param string $value Optional. Either a query variable value, or a URL to act upon. + * @param string $url Optional. A URL to act upon. + * @return string New URL query string (unescaped). + */ +function add_query_arg( ...$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]; + } + } + + $frag = strstr( $uri, '#' ); + if ( $frag ) { + $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; + }</ |