- hash: documentation ( source)
<?php
/*
* Fill in all five below and click blue 'eval();' button below textarea.
*
* ------------------ */
$hash = ''; #Hash SHA256
$secret = ''; #Secret
$minefield = ''; #Mminefield
/* ------------------ */
if ($hash == '' || $secret == '' || $minefield == '') exit("Fill in details");
$sha256 = hash('sha256', $minefield.'|'.$secret);
echo "Hash matches: ".($hash == $sha256 ? 'Yes': 'No')."\n";