How to replace Chinese string in php

How to implement php to replace Chinese strings: first create a PHP sample file; then set an expression that matches any Chinese character; finally use this expression to replace, that is, replace any characters that appear in the string. Chinese characters, including Chinese symbols.

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php Replace the Chinese character in the string

$str="我是chinese,龙的传人!";
//匹配任意中文字符的表达式
$pattern="/[\x7f-\xff]/sim";
$replacement='';
//用该表达式替换，将替换掉字符串中出现的任意中文字符，包括中文符号。
echo 'result:'.preg_replace($pattern,$replacement,$str);
//结果为：chinese,!

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