php正则去掉字符串中非汉字字符串
$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
当前题目:php正则去掉字符串中非汉字字符串
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