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admin-bar.php
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atomlib.php
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author-template.php
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bookmark-template.php
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bookmark.php
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canonical.php
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capabilities.php
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category-template.php
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category.php
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class-IXR.php
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class-wp-oembed-controller.php
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class-wp-plugin-dependencies.php
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class-wp-post-type.php
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class-wp-query.php
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class-wp-recovery-mode.php
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class-wp-rewrite.php
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class-wp-role.php
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class-wp-script-modules.php
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class-wp-scripts.php
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class-wp-session-tokens.php
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class-wp-simplepie-file.php
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class-wp-simplepie-sanitize-kses.php
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class-wp-site.php
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class-wp-tax-query.php
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class-wp-term-query.php
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class-wp-term.php
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class-wp-theme-json-schema.php
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class-wp-theme-json.php
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class-wp-token-map.php
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class-wp-user-meta-session-tokens.php
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class-wp-user-query.php
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class-wp-user.php
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class-wp-walker.php
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class-wp-widget.php
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class-wp-xmlrpc-server.php
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class-wp.php
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class-wpdb.php
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class.wp-scripts.php
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class.wp-styles.php
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comment.php
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compat.php
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cron.php
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default-constants.php
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default-filters.php
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default-widgets.php
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deprecated.php
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embed.php
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error-protection.php
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error_log
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feed-atom-comments.php
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feed-atom.php
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feed-rdf.php
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feed-rss.php
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feed-rss2-comments.php
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feed-rss2.php
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feed.php
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fonts.php
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functions.php
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functions.wp-scripts.php
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functions.wp-styles.php
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global-styles-and-settings.php
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https-detection.php
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https-migration.php
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kses.php
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l10n.php
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link-template.php
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load.php
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locale.php
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media-template.php
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media.php
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meta.php
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ms-blogs.php
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ms-default-filters.php
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ms-deprecated.php
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ms-files.php
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ms-functions.php
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ms-load.php
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ms-site.php
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nav-menu-template.php
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nav-menu.php
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option.php
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pluggable.php
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plugin.php
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post-formats.php
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query.php
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registration-functions.php
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registration.php
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revision.php
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robots-template.php
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rss.php
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script-modules.php
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session.php
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shortcodes.php
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template.php
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theme.php
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update.php
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version.php
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widgets.php
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wp-db.php
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wp-diff.php
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<?php /** * WordPress implementation for PHP functions either missing from older PHP versions or not included by default. * * @package PHP * @access private */ // If gettext isn't available. if ( ! function_exists( '_' ) ) { function _( $message ) { return $message; } } /** * Returns whether PCRE/u (PCRE_UTF8 modifier) is available for use. * * @ignore * @since 4.2.2 * @access private * * @param bool $set - Used for testing only * null : default - get PCRE/u capability * false : Used for testing - return false for future calls to this function * 'reset': Used for testing - restore default behavior of this function */ function _wp_can_use_pcre_u( $set = null ) { static $utf8_pcre = 'reset'; if ( null !== $set ) { $utf8_pcre = $set; } if ( 'reset' === $utf8_pcre ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged -- intentional error generated to detect PCRE/u support. $utf8_pcre = @preg_match( '/^./u', 'a' ); } return $utf8_pcre; } /** * Indicates if a given slug for a character set represents the UTF-8 text encoding. * * A charset is considered to represent UTF-8 if it is a case-insensitive match * of "UTF-8" with or without the hyphen. * * Example: * * true === _is_utf8_charset( 'UTF-8' ); * true === _is_utf8_charset( 'utf8' ); * false === _is_utf8_charset( 'latin1' ); * false === _is_utf8_charset( 'UTF 8' ); * * // Only strings match. * false === _is_utf8_charset( [ 'charset' => 'utf-8' ] ); * * `is_utf8_charset` should be used outside of this file. * * @ignore * @since 6.6.1 * * @param string $charset_slug Slug representing a text character encoding, or "charset". * E.g. "UTF-8", "Windows-1252", "ISO-8859-1", "SJIS". * * @return bool Whether the slug represents the UTF-8 encoding. */ function _is_utf8_charset( $charset_slug ) { if ( ! is_string( $charset_slug ) ) { return false; } return ( 0 === strcasecmp( 'UTF-8', $charset_slug ) || 0 === strcasecmp( 'UTF8', $charset_slug ) ); } if ( ! function_exists( 'mb_substr' ) ) : /** * Compat function to mimic mb_substr(). * * @ignore * @since 3.2.0 * * @see _mb_substr() * * @param string $string The string to extract the substring from. * @param int $start Position to being extraction from in `$string`. * @param int|null $length Optional. Maximum number of characters to extract from `$string`. * Default null. * @param string|null $encoding Optional. Character encoding to use. Default null. * @return string Extracted substring. */ function mb_substr( $string, $start, $length = null, $encoding = null ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound return _mb_substr( $string, $start, $length, $encoding ); } endif; /** * Internal compat function to mimic mb_substr(). * * Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit. * For `$encoding === UTF-8`, the `$str` input is expected to be a valid UTF-8 byte * sequence. The behavior of this function for invalid inputs is undefined. * * @ignore * @since 3.2.0 * * @param string $str The string to extract the substring from. * @param int $start Position to being extraction from in `$str`. * @param int|null $length Optional. Maximum number of characters to extract from `$str`. * Default null. * @param string|null $encoding Optional. Character encoding to use. Default null. * @return string Extracted substring. */ function _mb_substr( $str, $start, $length = null, $encoding = null ) { if ( null === $str ) { return ''; } if ( null === $encoding ) { $encoding = get_option( 'blog_charset' ); } /* * The solution below works only for UTF-8, so in case of a different * charset just use built-in substr(). */ if ( ! _is_utf8_charset( $encoding ) ) { return is_null( $length ) ? substr( $str, $start ) : substr( $str, $start, $length ); } if ( _wp_can_use_pcre_u() ) { // Use the regex unicode support to separate the UTF-8 characters into an array. preg_match_all( '/./us', $str, $match ); $chars = is_null( $length ) ? array_slice( $match[0], $start ) : array_slice( $match[0], $start, $length ); return implode( '', $chars ); } $regex = '/( [\x00-\x7F] # single-byte sequences 0xxxxxxx | [\xC2-\xDF][\x80-\xBF] # double-byte sequences 110xxxxx 10xxxxxx | \xE0[\xA0-\xBF][\x80-\xBF] # triple-byte sequences 1110xxxx 10xxxxxx * 2 | [\xE1-\xEC][\x80-\xBF]{2} | \xED[\x80-\x9F][\x80-\xBF] | [\xEE-\xEF][\x80-\xBF]{2} | \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences 11110xxx 10xxxxxx * 3 | [\xF1-\xF3][\x80-\xBF]{3} | \xF4[\x80-\x8F][\x80-\xBF]{2} )/x'; // Start with 1 element instead of 0 since the first thing we do is pop. $chars = array( '' ); do { // We had some string left over from the last round, but we counted it in that last round. array_pop( $chars ); /* * Split by UTF-8 character, limit to 1000 characters (last array element will contain * the rest of the string). */ $pieces = preg_split( $regex, $str, 1000, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY ); $chars = array_merge( $chars, $pieces ); // If there's anything left over, repeat the loop. } while ( count( $pieces ) > 1 && $str = array_pop( $pieces ) ); return implode( '', array_slice( $chars, $start, $length ) ); } if ( ! function_exists( 'mb_strlen' ) ) : /** * Compat function to mimic mb_strlen(). * * @ignore * @since 4.2.0 * * @see _mb_strlen() * * @param string $string The string to retrieve the character length from. * @param string|null $encoding Optional. Character encoding to use. Default null. * @return int String length of `$string`. */ function mb_strlen( $string, $encoding = null ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound return _mb_strlen( $string, $encoding ); } endif; /** * Internal compat function to mimic mb_strlen(). * * Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit. * For `$encoding === UTF-8`, the `$str` input is expected to be a valid UTF-8 byte * sequence. The behavior of this function for invalid inputs is undefined. * * @ignore * @since 4.2.0 * * @param string $str The string to retrieve the character length from. * @param string|null $encoding Optional. Character encoding to use. Default null. * @return int String length of `$str`. */ function _mb_strlen( $str, $encoding = null ) { if ( null === $encoding ) { $encoding = get_option( 'blog_charset' ); } /* * The solution below works only for UTF-8, so in case of a different charset * just use built-in strlen(). */ if ( ! _is_utf8_charset( $encoding ) ) { return strlen( $str ); } if ( _wp_can_use_pcre_u() ) { // Use the regex unicode support to separate the UTF-8 characters into an array. preg_match_all( '/./us', $str, $match ); return count( $match[0] ); } $regex = '/(?: [\x00-\x7F] # single-byte sequences 0xxxxxxx | [\xC2-\xDF][\x80-\xBF] # double-byte sequences 110xxxxx 10xxxxxx | \xE0[\xA0-\xBF][\x80-\xBF] # triple-byte sequences 1110xxxx 10xxxxxx * 2 | [\xE1-\xEC][\x80-\xBF]{2} | \xED[\x80-\x9F][\x80-\xBF] | [\xEE-\xEF][\x80-\xBF]{2} | \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences 11110xxx 10xxxxxx * 3 | [\xF1-\xF3][\x80-\xBF]{3} | \xF4[\x80-\x8F][\x80-\xBF]{2} )/x'; // Start at 1 instead of 0 since the first thing we do is decrement. $count = 1; do { // We had some string left over from the last round, but we counted it in that last round. --$count; /* * Split by UTF-8 character, limit to 1000 characters (last array element will contain * the rest of the string). */ $pieces = preg_split( $regex, $str, 1000 ); // Increment. $count += count( $pieces ); // If there's anything left over, repeat the loop. } while ( $str = array_pop( $pieces ) ); // Fencepost: preg_split() always returns one extra item in the array. return --$count; } if ( ! function_exists( 'hash_hmac' ) ) : /** * Compat function to mimic hash_hmac(). * * The Hash extension is bundled with PHP by default since PHP 5.1.2. * However, the extension may be explicitly disabled on select servers. * As of PHP 7.4.0, the Hash extension is a core PHP extension and can no * longer be disabled. * I.e. when PHP 7.4.0 becomes the minimum requirement, this polyfill * and the associated `_hash_hmac()` function can be safely removed. * * @ignore * @since 3.2.0 * * @see _hash_hmac() * * @param string $algo Hash algorithm. Accepts 'md5' or 'sha1'. * @param string $data Data to be hashed. * @param string $key Secret key to use for generating the hash. * @param bool $binary Optional. Whether to output raw binary data (true), * or lowercase hexits (false). Default false. * @return string|false The hash in output determined by `$binary`. * False if `$algo` is unknown or invalid. */ function hash_hmac( $algo, $data, $key, $binary = false ) { return _hash_hmac( $algo, $data, $key, $binary ); } endif; /** * Internal compat function to mimic hash_hmac(). * * @ignore * @since 3.2.0 * * @param string $algo Hash algorithm. Accepts 'md5' or 'sha1'. * @param string $data Data to be hashed. * @param string $key Secret key to use for generating the hash. * @param bool $binary Optional. Whether to output raw binary data (true), * or lowercase hexits (false). Default false. * @return string|false The hash in output determined by `$binary`. * False if `$algo` is unknown or invalid. */ function _hash_hmac( $algo, $data, $key, $binary = false ) { $packs = array( 'md5' => 'H32', 'sha1' => 'H40', ); if ( ! isset( $packs[ $algo ] ) ) { return false; } $pack = $packs[ $algo ]; if ( strlen( $key ) > 64 ) { $key = pack( $pack, $algo( $key ) ); } $key = str_pad( $key, 64, chr( 0 ) ); $ipad = ( substr( $key, 0, 64 ) ^ str_repeat( chr( 0x36 ), 64 ) ); $opad = ( substr( $key, 0, 64 ) ^ str_repeat( chr( 0x5C ), 64 ) ); $hmac = $algo( $opad . pack( $pack, $algo( $ipad . $data ) ) ); if ( $binary ) { return pack( $pack, $hmac ); } return $hmac; } if ( ! function_exists( 'hash_equals' ) ) : /** * Timing attack safe string comparison. * * Compares two strings using the same time whether they're equal or not. * * Note: It can leak the length of a string when arguments of differing length are supplied. * * This function was added in PHP 5.6. * However, the Hash extension may be explicitly disabled on select servers. * As of PHP 7.4.0, the Hash extension is a core PHP extension and can no * longer be disabled. * I.e. when PHP 7.4.0 becomes the minimum requirement, this polyfill * can be safely removed. * * @since 3.9.2 * * @param string $known_string Expected string. * @param string $user_string Actual, user supplied, string. * @return bool Whether strings are equal. */ function hash_equals( $known_string, $user_string ) { $known_string_length = strlen( $known_string ); if ( strlen( $user_string ) !== $known_string_length ) { return false; } $result = 0; // Do not attempt to "optimize" this. for ( $i = 0; $i < $known_string_length; $i++ ) { $result |= ord( $known_string[ $i ] ) ^ ord( $user_string[ $i ] ); } return 0 === $result; } endif; // sodium_crypto_box() was introduced in PHP 7.2. if ( ! function_exists( 'sodium_crypto_box' ) ) { require ABSPATH . WPINC . '/sodium_compat/autoload.php'; } if ( ! function_exists( 'is_countable' ) ) { /** * Polyfill for is_countable() function added in PHP 7.3. * * Verify that the content of a variable is an array or an object * implementing the Countable interface. * * @since 4.9.6 * * @param mixed $value The value to check. * @return bool True if `$value` is countable, false otherwise. */ function is_countable( $value ) { return ( is_array( $value ) || $value instanceof Countable || $value instanceof SimpleXMLElement || $value instanceof ResourceBundle ); } } if ( ! function_exists( 'array_key_first' ) ) { /** * Polyfill for array_key_first() function added in PHP 7.3. * * Get the first key of the given array without affecting * the internal array pointer. * * @since 5.9.0 * * @param array $array An array. * @return string|int|null The first key of array if the array * is not empty; `null` otherwise. */ function array_key_first( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound foreach ( $array as $key => $value ) { return $key; } } } if ( ! function_exists( 'array_key_last' ) ) { /** * Polyfill for `array_key_last()` function added in PHP 7.3. * * Get the last key of the given array without affecting the * internal array pointer. * * @since 5.9.0 * * @param array $array An array. * @return string|int|null The last key of array if the array *. is not empty; `null` otherwise. */ function array_key_last( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound if ( empty( $array ) ) { return null; } end( $array ); return key( $array ); } } if ( ! function_exists( 'array_is_list' ) ) { /** * Polyfill for `array_is_list()` function added in PHP 8.1. * * Determines if the given array is a list. * * An array is considered a list if its keys consist of consecutive numbers from 0 to count($array)-1. * * @see https://github.com/symfony/polyfill-php81/tree/main * * @since 6.5.0 * * @param array<mixed> $arr The array being evaluated. * @return bool True if array is a list, false otherwise. */ function array_is_list( $arr ) { if ( ( array() === $arr ) || ( array_values( $arr ) === $arr ) ) { return true; } $next_key = -1; foreach ( $arr as $k => $v ) { if ( ++$next_key !== $k ) { return false; } } return true; } } if ( ! function_exists( 'str_contains' ) ) { /** * Polyfill for `str_contains()` function added in PHP 8.0. * * Performs a case-sensitive check indicating if needle is * contained in haystack. * * @since 5.9.0 * * @param string $haystack The string to search in. * @param string $needle The substring to search for in the `$haystack`. * @return bool True if `$needle` is in `$haystack`, otherwise false. */ function str_contains( $haystack, $needle ) { if ( '' === $needle ) { return true; } return false !== strpos( $haystack, $needle ); } } if ( ! function_exists( 'str_starts_with' ) ) { /** * Polyfill for `str_starts_with()` function added in PHP 8.0. * * Performs a case-sensitive check indicating if * the haystack begins with needle. * * @since 5.9.0 * * @param string $haystack The string to search in. * @param string $needle The substring to search for in the `$haystack`. * @return bool True if `$haystack` starts with `$needle`, otherwise false. */ function str_starts_with( $haystack, $needle ) { if ( '' === $needle ) { return true; } return 0 === strpos( $haystack, $needle ); } } if ( ! function_exists( 'str_ends_with' ) ) { /** * Polyfill for `str_ends_with()` function added in PHP 8.0. * * Performs a case-sensitive check indicating if * the haystack ends with needle. * * @since 5.9.0 * * @param string $haystack The string to search in. * @param string $needle The substring to search for in the `$haystack`. * @return bool True if `$haystack` ends with `$needle`, otherwise false. */ function str_ends_with( $haystack, $needle ) { if ( '' === $haystack ) { return '' === $needle; } $len = strlen( $needle ); return substr( $haystack, -$len, $len ) === $needle; } } // IMAGETYPE_AVIF constant is only defined in PHP 8.x or later. if ( ! defined( 'IMAGETYPE_AVIF' ) ) { define( 'IMAGETYPE_AVIF', 19 ); } // IMG_AVIF constant is only defined in PHP 8.x or later. if ( ! defined( 'IMG_AVIF' ) ) { define( 'IMG_AVIF', IMAGETYPE_AVIF ); }
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