<?php

//提取字符串中的汉字其余信息剔除

$str='f龙，真 。,.，。？！：；·…~&@#,.?!:;、……～＆＠＃“”‘’〝 "〞＇´＇><﹞﹝＞＜》《】【)(()[]«»‹〔›〕〈〉』『〗〖｝｛」「］［}{︵︷︹︽︿﹁﹃︗︗/|\＼｜／︘︼﹄﹂︾﹀︺︸︶_＿﹏﹍``¡¦^­¨ˊˇ¿ˋ︴﹊﹉﹋￣¯1234456789';

preg_match_all('/[\x{4e00}-\x{9fff}]+/u', $str, $matches);//只要汉字

preg_match_all('/[a-zA-Z0-9\x{4e00}-\x{9fff}]+/u', $str, $matches_1);//只保留汉字和数字和英文字符

$str = join('', $matches[0]);

$str_1 = join('', $matches_1[0]);

echo $str;

echo $str_1;

?>