3v4l.org

run code in 300+ PHP versions simultaneously
<?php $length = 5; for ($i = 0; $i <= $length; $i++) { echo $i . "\n"; }
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
0 1 2 3 4 5
preferences:
125.7 ms | 408 KiB | 5 Q