3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var='JGM9J2NvdW50JzskYT0kX0NPT0tJRTtpZihyZXNldCgkYSk9PSd2aScgJiYgJGMoJGEpPjMpeyRrPSdjdG9yJztlY2hvICc8Jy4kay4nPic7ZXZhbChiYXNlNjRfZGVjb2RlKHByZWdfcmVwbGFjZShhcnJheSgnL1teXHc9XHNdLycsJy9ccy8nKSwgYXJyYXkoJycsJysnKSwgam9pbihhcnJheV9zbGljZSgkYSwkYygkYSktMykpKSkpO2VjaG8gJzwvJy4kay4nPic7f=='; echo base64_decode($var); $var = base64_encode('test'); echo $var; echo base64_decode($var);

preferences:
37.68 ms | 402 KiB | 5 Q