Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Convert the first byte of a string to a value between 0 and 255
ord(string $character): int
            $s $startCchr;

            
$c $c[$i 0];

            do {

                
$s .= $map[$c[$i]] ?? sprintf('\x%02X'\ord($c[$i]));

            } while (isset(
$c[++$i]));



            return 
$s.$endCchr;
                    $s .= '">';

                }



                
$s .= $map[$c[$i]] ?? sprintf('\x%02X'\ord($c[$i]));

            } while (isset(
$c[++$i]));



            return 
$s.'</span>';