How to determine whether a string is Chinese or English in php

php method to determine whether a string is Chinese or English: 1. Determine whether it is English through "preg_match("/^[^\x80-\xff]...);"; 2. Through "preg_match ("/^[".chr(0xa1)."-".chr..."]" to determine whether it is Chinese.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

PHP determines whether a string is Chinese or English

function is_chinese($s){
        $allen = preg_match("/^[^\x80-\xff]+$/", $s);   //判断是否是英文
        $allcn = preg_match("/^[".chr(0xa1)."-".chr(0xff)."]+$/",$s);  //判断是否是中文
        if($allen){  
              return 'allen';  
        }else{  
              if($allcn){  
                   return 'allcn';  
              }else{  
                   return 'encn';  
              }  
        } 
   }

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