3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 1; $i < 6; ++$i) { echo $i++ , " " , $i * $i , " "; }
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
1 4 3 16 5 36
preferences:
82.97 ms | 1567 KiB | 4 Q