(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
mb_regex_encoding — Set/Get character encoding for multibyte regex
Set/Get character encoding for a multibyte regex.
If encoding is set, then
成功时返回 true， 或者在失败时返回 false。
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.
| 版本 | 说明 |
|---|---|
| 8.0.0 |
现在 encoding 可以为 null。
|