3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = "1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736"; echo $input . "\n"; echo hex2bin($input) . "\n"; ?>
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736 77316?x+x413=x9x(7-6<x7>x:9;76
preferences:
210.38 ms | 404 KiB | 240 Q