3v4l.org

run code in 300+ PHP versions simultaneously
<?php $idx = 1; do { echo $idx; $idx += 2; } while ($idx <= 99);
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
13579111315171921232527293133353739414345474951535557596163656769717375777981838587899193959799
preferences:
104.87 ms | 2125 KiB | 4 Q