PHP hexadecimal conversion

? Php/*** convert ASCII to hexadecimal and hexadecimal to ASCII * non-profit organizations or individuals may feel free to reprint them, for commercial purposes, please obtain the author's consent ** // Convert ASCII to hexadecimal functionasc2hex ($ str) {return '\ X '. substr (chunk_split (bin2hex ($ str), 2,

 

/**
*  
* Convert ASCII to hexadecimal and hexadecimal to ASCII
* For non-profit organizations or individuals, please feel free to repost them. For commercial purposes, please obtain the author's consent.
*  
*/
// Convert ASCII to hexadecimal
Function asc2hex ($ str ){
Return '\ X'. substr (chunk_split (bin2hex ($ str), 2,' \ X'), 0,-2 );
}  
// Convert hexadecimal to ASCII
Function hex2asc ($ str ){
$ Str = join ('', explode ('\ X', $ str ));
$ Len = strlen ($ str );
For ($ I = 0; $ I <$ len; $ I + = 2) $ data. = chr (hexdec (substr ($ str, $ I, 2 )));
Return $ data;
}  
$ Asc = "haha ";
$ Hex = asc2hex ($ asc );
$ Asc = hex2asc ($ hex );
Echo "hex:". $ hex;
Echo"
";
Echo "asc:". $ asc;
?>