3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = 0; $data = [0, 1,2,3,4,5,6,7,8,9]; foreach ($data as $item) { if ($i++ % 2 == 0) { echo $item . "\n"; } }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0 2 4 6 8

preferences:
132.14 ms | 402 KiB | 121 Q