3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 1; $i < 3; $i = $i + 1) { for ($j = 1; $j < 4; $j = $j + 1) { print "I: $i, J: $j\n"; } }
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
I: 1, J: 1 I: 1, J: 2 I: 1, J: 3 I: 2, J: 1 I: 2, J: 2 I: 2, J: 3

preferences:
262.67 ms | 405 KiB | 365 Q