php 匹配中文(utf8)
$username ="你好"; $pattern = '/^[\x{4e00}-\x{9fa5}]{2,20}$/u'; $res = preg_match($pattern,$username); var_dump($res);
$username ="你好"; $pattern = '/^[\x{4e00}-\x{9fa5}]{2,20}$/u'; $res = preg_match($pattern,$username); var_dump($res);