(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
mb_regex_encoding — Set/Get character encoding for multibyte regex
mb_regex_encoding(?string $encoding = null): string|bool
Set/Get character encoding for a multibyte regex.
encodingThe encoding parameter is the character encoding. If it is omitted or null, the internal character encoding value will be used.
If encoding is set, then Returns true on success or false on failure. In this case, the internal character encoding is NOT changed. If encoding is omitted, then the current character encoding name for a multibyte regex is returned.
| Version | Description |
|---|---|
| 8.0.0 | encoding is nullable now. |
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https://www.php.net/manual/en/function.mb-regex-encoding.php