- hash: documentation ( source)
- strrev: documentation ( source)
<?php
$auth = "\x08";
$hsh = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
if ($hsh !== hash("sha256", "aaaabbbb" . strrev($auth))) {
echo "aaaabbbb$auth";
echo "aaaabbbb";
echo "$auth";
$auth = false;
}
echo $auth;
?>