- var_dump: documentation ( source)
- strcmp: documentation ( source)
- hash: documentation ( source)
- md5: documentation ( source)
<?php
strcmp (hash("md5","QNKCDZO"),hash("md5","240610708"));
var_dump(hash("md5","QNKCDZO") == hash("md5","240610708"));
var_dump(md5('240610708') === md5('QNKCDZO'));