- var_dump: documentation ( source)
- strcmp: documentation ( source)
- md5: documentation ( source)
<?php
var_dump(md5('QNKCDZO'));
var_dump(md5('240610708'));
var_dump(md5('240610708') === md5('QNKCDZO'));
var_dump(strcmp(md5('240610708'), md5('QNKCDZO')) === 0);