- var_dump: documentation ( source)
- md5: documentation ( source)
<?php
$a = md5('QNKCDZO');
$b = md5('QNKCDZO');
var_dump(md5('QNKCDZO') == md5('QNKCDZO')); // should true because same content
var_dump(md5('QNKCDZO') === md5('QNKCDZO')); // should true because not same variable / ram
var_dump($a == $b); // should true because same content
var_dump($a === $b); // should false because not same variable / ram