How to convert php Chinese to ascii code

How to convert Chinese to ascii code in php: first set the current php file environment to UTF-8; then convert Chinese to ascii code through "public function strtoascii($str){...}".

The operating environment of this article: Windows7 system, PHP7.1 version, DELL G3 computer

php How to convert Chinese ascii code?

php converts strings to ASCII, php converts Chinese character strings to ASCII, and vice versa

Use it directly, the function is below, encapsulated by yourself, dear The test is correct

A: Convert the string (also practical for Chinese) to ascii (note: I default that our current php file environment is UTF-8, if it is GBK, the mb_convert_encoding operation is not required)

public function strtoascii($str){
        $str=mb_convert_encoding($str,'GB2312');
        $change_after='';
        for($i=0;$i<strlen($str);$i++){
            $temp_str=dechex(ord($str[$i]));
            $change_after.=$temp_str[1].$temp_str[0];
        }
        return strtoupper($change_after);
    }

B: Convert ascii to string (also practical for Chinese) (Note: I default that our current php file environment is UTF-8. If it is GBK, the mb_convert_encoding operation is not required)

public function asciitostr($sacii){
        $asc_arr= str_split(strtolower($sacii),2);
        $str='';
        for($i=0;$i<count($asc_arr);$i++){
            $str.=chr(hexdec($asc_arr[$i][1].$asc_arr[$i][0]));
        }
        return mb_convert_encoding($str,&#39;UTF-8&#39;,&#39;GB2312&#39;);
    }

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