- base64_decode: documentation ( source)
- strrev: documentation ( source)
<?php
//PWNETnlRek56VXpOMFl6TXZzMmI=
//PWt6TnlRVE0zSURPMFl6TXZzMmI=
$string='t6TnlRVE0zSURPMFl6TXZzMmI=';
$string = base64_decode(strrev(base64_decode($string)));
//$new=explode('/',$string);
echo $string;