3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = range(1,10); foreach($a as $key => $value) { echo $key." "; echo $value."\n"; }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10
preferences:
279.93 ms | 404 KiB | 403 Q