81     public static function mb_convert_encoding($s, $toEncoding, $fromEncoding = null)  argument
84             $fromEncoding = self::mb_detect_encoding($s, $fromEncoding);
92             $s = base64_decode($s);
97             return base64_encode($s);
105                 $s = \iconv($fromEncoding, 'UTF-8//IGNORE', $s);
108 …         return preg_replace_callback('/[\x80-\xFF]+/', [__CLASS__, 'html_encoding_callback'], $s);
112             $s = html_entity_decode($s, \ENT_COMPAT, 'UTF-8');
116         return \iconv($fromEncoding, $toEncoding.'//IGNORE', $s);
131     public static function mb_decode_mimeheader($s)  argument
133         return \iconv_mime_decode($s, 2, self::$internalEncoding);
136 …public static function mb_encode_mimeheader($s, $charset = null, $transferEncoding = null, $linefe…  argument
141     public static function mb_decode_numericentity($s, $convmap, $encoding = null)  argument
143         if (null !== $s && !is_scalar($s) && !(\is_object($s) && method_exists($s, '__toString'))) {
144 …or('mb_decode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', \E_USER_W…
154 …or('mb_decode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', \E_USER_W…
159         $s = (string) $s;
160         if ('' === $s) {
168             if (!preg_match('//u', $s)) {
169                 $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
172             $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
183 …$s = preg_replace_callback('/&#(?:0*([0-9]+)|x0*([0-9a-fA-F]+))(?!&);?/', function (array $m) use …
192         }, $s);
195             return $s;
198         return \iconv('UTF-8', $encoding.'//IGNORE', $s);
201     public static function mb_encode_numericentity($s, $convmap, $encoding = null, $is_hex = false)  argument
203         if (null !== $s && !is_scalar($s) && !(\is_object($s) && method_exists($s, '__toString'))) {
204 …or('mb_encode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', \E_USER_W…
214 …or('mb_encode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', \E_USER_W…
220 …r('mb_encode_numericentity() expects parameter 4 to be boolean, '.\gettype($s).' given', \E_USER_W…
225         $s = (string) $s;
226         if ('' === $s) {
234             if (!preg_match('//u', $s)) {
235                 $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
238             $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
245         $len = \strlen($s);
249             $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
250             $uchr = substr($s, $i, $ulen);
271     public static function mb_convert_case($s, $mode, $encoding = null)  argument
273         $s = (string) $s;
274         if ('' === $s) {
282             if (!preg_match('//u', $s)) {
283                 $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
286             $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
294             $s = preg_replace_callback($titleRegexp, [__CLASS__, 'title_case'], $s);
304                     $s = str_replace(self::CASE_FOLD[0], self::CASE_FOLD[1], $s);
317             $len = \strlen($s);
320                 $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
321                 $uchr = substr($s, $i, $ulen);
331                             $s[--$nlen] = $uchr[--$ulen];
334                         $s = substr_replace($s, $uchr, $i - $ulen, $ulen);
343             return $s;
346         return \iconv('UTF-8', $encoding.'//IGNORE', $s);
484     public static function mb_strlen($s, $encoding = null)  argument
488             return \strlen($s);
491         return @\iconv_strlen($s, $encoding);
584     public static function mb_strtolower($s, $encoding = null)  argument
586         return self::mb_convert_case($s, \MB_CASE_LOWER, $encoding);
589     public static function mb_strtoupper($s, $encoding = null)  argument
591         return self::mb_convert_case($s, \MB_CASE_UPPER, $encoding);
612     public static function mb_substr($s, $start, $length = null, $encoding = null)  argument
616             return (string) substr($s, $start, null === $length ? 2147483647 : $length);
620             $start = \iconv_strlen($s, $encoding) + $start;
629             $length = \iconv_strlen($s, $encoding) + $length - $start;
635         return (string) \iconv_substr($s, $start, $length, $encoding);
734     public static function mb_strwidth($s, $encoding = null)  argument
739             $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
742 …s = preg_replace('/[\x{1100}-\x{115F}\x{2329}\x{232A}\x{2E80}-\x{303E}\x{3040}-\x{A4CF}\x{AC00}-\x…
744         return ($wide << 1) + \iconv_strlen($s, 'UTF-8');
760             $s = \chr($code);
762             $s = \chr(0xC0 | $code >> 6).\chr(0x80 | $code & 0x3F);
764             $s = \chr(0xE0 | $code >> 12).\chr(0x80 | $code >> 6 & 0x3F).\chr(0x80 | $code & 0x3F);
766 …$s = \chr(0xF0 | $code >> 18).\chr(0x80 | $code >> 12 & 0x3F).\chr(0x80 | $code >> 6 & 0x3F).\chr(…
770             $s = mb_convert_encoding($s, $encoding, 'UTF-8');
773         return $s;
776     public static function mb_ord($s, $encoding = null)  argument
779             $s = mb_convert_encoding($s, 'UTF-8', $encoding);
782         if (1 === \strlen($s)) {
783             return \ord($s);
786         $code = ($s = unpack('C*', substr($s, 0, 4))) ? $s[1] : 0;
788 …     return (($code - 0xF0) << 18) + (($s[2] - 0x80) << 12) + (($s[3] - 0x80) << 6) + $s[4] - 0x80;
791             return (($code - 0xE0) << 12) + (($s[2] - 0x80) << 6) + $s[3] - 0x80;
794             return (($code - 0xC0) << 6) + $s[2] - 0x80;
837     private static function title_case(array $s)  argument
839 …return self::mb_convert_case($s[1], \MB_CASE_UPPER, 'UTF-8').self::mb_convert_case($s[2], \MB_CASE…