3v4l.org

run code in 300+ PHP versions simultaneously
<?php $runs = 10000; $a = range(1,$runs); for ($i = 1; $i <= $runs; $i++) { if (isset($a[$i])) { } }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 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 - 8.3.7
preferences:
175.24 ms | 404 KiB | 241 Q