3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 1; while ($x <= 10) { Echo "webpage.com/p/$x" . "\n"; $x++; }
Output for 7.0.0 - 7.0.20, 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
webpage.com/p/1 webpage.com/p/2 webpage.com/p/3 webpage.com/p/4 webpage.com/p/5 webpage.com/p/6 webpage.com/p/7 webpage.com/p/8 webpage.com/p/9 webpage.com/p/10
preferences:
128.63 ms | 1667 KiB | 4 Q