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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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WordPress implementation for PHP functions either missing from older PHP versions or not included by default.
| File Size: | 545 lines (16 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 1 file wp-includes/sodium_compat/autoload.php |
| _( $message ) X-Ref |
| No description |
| _wp_can_use_pcre_u( $set = null ) X-Ref |
| Returns whether PCRE/u (PCRE_UTF8 modifier) is available for use. param: bool $set - Used for testing only |
| _is_utf8_charset( $charset_slug ) X-Ref |
| 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. param: string $charset_slug Slug representing a text character encoding, or "charset". return: bool Whether the slug represents the UTF-8 encoding. |
| mb_substr( $string, $start, $length = null, $encoding = null ) X-Ref |
| Compat function to mimic 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`. param: string|null $encoding Optional. Character encoding to use. Default null. return: string Extracted substring. |
| _mb_substr( $str, $start, $length = null, $encoding = null ) X-Ref |
| Internal compat function to mimic mb_substr(). Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit. For `$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. 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`. param: string|null $encoding Optional. Character encoding to use. Default null. return: string Extracted substring. |
| mb_strlen( $string, $encoding = null ) X-Ref |
| Compat function to mimic 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`. |
| _mb_strlen( $str, $encoding = null ) X-Ref |
| Internal compat function to mimic mb_strlen(). Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit. For `$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. 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`. |
| is_countable( $value ) X-Ref |
| 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. param: mixed $value The value to check. return: bool True if `$value` is countable, false otherwise. |
| array_key_first( array $array ) X-Ref |
| 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. param: array $array An array. return: string|int|null The first key of array if the array |
| array_key_last( array $array ) X-Ref |
| 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. param: array $array An array. return: string|int|null The last key of array if the array |
| array_is_list( $arr ) X-Ref |
| Polyfill for `array_is_list()` function added in PHP 8.1. Determines if the given array is a list. An array is considered a list if its keys consist of consecutive numbers from 0 to count($array)-1. param: array<mixed> $arr The array being evaluated. return: bool True if array is a list, false otherwise. |
| str_contains( $haystack, $needle ) X-Ref |
| Polyfill for `str_contains()` function added in PHP 8.0. Performs a case-sensitive check indicating if needle is contained in haystack. 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. |
| str_starts_with( $haystack, $needle ) X-Ref |
| Polyfill for `str_starts_with()` function added in PHP 8.0. Performs a case-sensitive check indicating if the haystack begins with needle. 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. |
| str_ends_with( $haystack, $needle ) X-Ref |
| Polyfill for `str_ends_with()` function added in PHP 8.0. Performs a case-sensitive check indicating if the haystack ends with needle. 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. |
| array_find( array $array, callable $callback ) X-Ref |
| Polyfill for `array_find()` function added in PHP 8.4. Searches an array for the first element that passes a given callback. param: array $array The array to search. param: callable $callback The callback to run for each element. return: mixed|null The first element in the array that passes the `$callback`, otherwise null. |
| array_find_key( array $array, callable $callback ) X-Ref |
| Polyfill for `array_find_key()` function added in PHP 8.4. Searches an array for the first key that passes a given callback. param: array $array The array to search. param: callable $callback The callback to run for each element. return: int|string|null The first key in the array that passes the `$callback`, otherwise null. |
| array_any( array $array, callable $callback ) X-Ref |
| Polyfill for `array_any()` function added in PHP 8.4. Checks if any element of an array passes a given callback. param: array $array The array to check. param: callable $callback The callback to run for each element. return: bool True if any element in the array passes the `$callback`, otherwise false. |
| array_all( array $array, callable $callback ) X-Ref |
| Polyfill for `array_all()` function added in PHP 8.4. Checks if all elements of an array pass a given callback. param: array $array The array to check. param: callable $callback The callback to run for each element. return: bool True if all elements in the array pass the `$callback`, otherwise false. |
| Generated : Sat May 31 08:20:01 2025 | Cross-referenced by PHPXref |