BIN2HEX (PHP 4, PHP 5, PHP 7, PHP 8)
<?php
$hex = bin2hex('Hello world!');
var_dump($hex);
var_dump(hex2bin($hex));
?>
SAMER SAEID
<?php
$hex = bin2hex('Hello world!');
var_dump($hex);
var_dump(hex2bin($hex));
?>