How to use regular expressions to replace Chinese characters in PHP?

PHP如何使用正则替换中文？

在PHP中可以使用函数“preg_replace()”进行正则替换，其匹配中文的正则为“/^[\x{4e00}-\x{9fa5}A-Za-z0-9_]+$/u”，使用时只需将正则、替换字符、字符串依次传入即可。

preg_replace 函数语法

preg_replace ( mixed $pattern , mixed $replacement , mixed $subject [, int $limit = -1 [, int &$count ]] ) : mixed

使用示例

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