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php 正则去掉字符串中非汉字字符串 更新:HHH 时间:2023-1-7
$str='2016,北京欢迎您 from around you..'; preg_match_all('/[\x{4e00}-\x{9fff}]+/u', $str, $matches); $str = join('', $matches[0]); //输出 北京欢迎您