3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(array_merge(['Test'], ['foo', 'bar']));
Output for 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.4 - 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
array(3) { [0]=> string(4) "Test" [1]=> string(3) "foo" [2]=> string(3) "bar" }

preferences:
152.38 ms | 403 KiB | 131 Q