3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 1; $i < 2; $i++) { echo "*\n"; for ($j = 1; $j < 2; $j++) { echo "**\n"; for ($k = 1; $k < 2; $k++) { echo "***\n"; for ($l = 1; $l < 2; $l++) { echo "****\n"; for ($m = 1; $m < 2; $m++) { echo "*****\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 - 5.6.40, 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 - 8.3.7
* ** *** **** *****
preferences:
266.38 ms | 406 KiB | 458 Q