3v4l.org

run code in 300+ PHP versions simultaneously
<?php $commands = new \SplStack(); $commands->push(1); $commands->push(2); $commands->rewind(); while (!$commands->isEmpty()) { $cmd = $commands->pop(); echo "$cmd\n"; } echo 'count: '.$commands->count();
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
2 1 count: 0
preferences:
134.32 ms | 407 KiB | 5 Q