155     public static function mb_decode_numericentity($s, $convmap, $encoding = null)
215     public static function mb_encode_numericentity($s, $convmap, $encoding = null, $is_hex = false)
285     public static function mb_convert_case($s, $mode, $encoding = null)
367     public static function mb_internal_encoding($encoding = null)
414     public static function mb_encoding_aliases($encoding)
425     public static function mb_check_encoding($var = null, $encoding = null)
515     public static function mb_strlen($s, $encoding = null)
525     public static function mb_strpos($haystack, $needle, $offset = 0, $encoding = null)
546     public static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null)
573     public static function mb_str_split($string, $split_length = 1, $encoding = null)
616     public static function mb_strtolower($s, $encoding = null)
621     public static function mb_strtoupper($s, $encoding = null)
644     public static function mb_substr($s, $start, $length = null, $encoding = null)
670     public static function mb_stripos($haystack, $needle, $offset = 0, $encoding = null)
680     public static function mb_stristr($haystack, $needle, $part = false, $encoding = null)
687     public static function mb_strrchr($haystack, $needle, $part = false, $encoding = null)
700     public static function mb_strrichr($haystack, $needle, $part = false, $encoding = null)
708     public static function mb_strripos($haystack, $needle, $offset = 0, $encoding = null)
719     public static function mb_strstr($haystack, $needle, $part = false, $encoding = null)
766     public static function mb_http_output($encoding = null)
771     public static function mb_strwidth($s, $encoding = null)
784     public static function mb_substr_count($haystack, $needle, $encoding = null)
794     public static function mb_chr($code, $encoding = null)
813     public static function mb_ord($s, $encoding = null)
837 …$length, string $pad_string = ' ', int $pad_type = \STR_PAD_RIGHT, ?string $encoding = null): stri…  argument
872     public static function mb_ucfirst(string $string, ?string $encoding = null): string  argument
886     public static function mb_lcfirst(string $string, ?string $encoding = null): string  argument
900     private static function getSubpart($pos, $part, $haystack, $encoding)
951     private static function getEncoding($encoding)
974 …public static function mb_trim(string $string, ?string $characters = null, ?string $encoding = nul…  argument
979 …public static function mb_ltrim(string $string, ?string $characters = null, ?string $encoding = nu…  argument
984 …public static function mb_rtrim(string $string, ?string $characters = null, ?string $encoding = nu…  argument
989 …_internal_trim(string $regex, string $string, ?string $characters, ?string $encoding, string $func…  argument
1032     private static function assertEncoding(string $encoding, string $errorFormat): void