How to remove WeChat emoticons in php

php去除微信表情的方法：首先创建一个PHP示例文件；然后通过“protected function emoji_filter($str) {...}”方法去掉微信表情即可。

本文操作环境：windows7系统、PHP7.1版，DELL G3电脑

php怎么去除微信表情？

PHP去掉微信昵称表情

传入的$str为获取到的微信昵称，返回值为去除表情后的昵称

  protected function emoji_filter($str) {
        if($str){
            $name = $str;
            $name = preg_replace('/\xEE[\x80-\xBF][\x80-\xBF]|\xEF[\x81-\x83][\x80-\xBF]/', '', $name);
            $name = preg_replace('/xE0[x80-x9F][x80-xBF]‘.‘|xED[xA0-xBF][x80-xBF]/S','?', $name);
            $return = json_decode(preg_replace("#(\\\ud[0-9a-f]{3})#ie","",json_encode($name)));
 
        }else{
            $return = '';
        }
        return $return;
 
    }

注：传递的参数需要是utf-8编码

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