3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "2a0"; for($i = 0; $i < 20; $i++) { print "$a\n"; $a++; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2a0 2a1 2a2 2a3 2a4 2a5 2a6 2a7 2a8 2a9 2b0 2b1 2b2 2b3 2b4 2b5 2b6 2b7 2b8 2b9
preferences:
269.2 ms | 406 KiB | 460 Q