3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "2a0"; for($i = 0; $i < 50; $i++) { print "$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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 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 - 8.3.7
2a0 2a1 2a2 2a3 2a4 2a5 2a6 2a7 2a8 2a9 2b0 2b1 2b2 2b3 2b4 2b5 2b6 2b7 2b8 2b9 2c0 2c1 2c2 2c3 2c4 2c5 2c6 2c7 2c8 2c9 2d0 2d1 2d2 2d3 2d4 2d5 2d6 2d7 2d8 2d9 2e0 3 4 5 6 7 8 9 10 11
preferences:
229.79 ms | 406 KiB | 317 Q