3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( array(1, 2, 3), array(4, 5, 6), array(7, 8, 9), array(10, 11, 12) ); array_push($a, array(1, 1, 1)); // or $a[] = array(1, 1, 1); echo '<pre>'; print_r($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, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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
<pre>Array ( [0] => Array ( [0] => 1 [1] => 2 [2] => 3 ) [1] => Array ( [0] => 4 [1] => 5 [2] => 6 ) [2] => Array ( [0] => 7 [1] => 8 [2] => 9 ) [3] => Array ( [0] => 10 [1] => 11 [2] => 12 ) [4] => Array ( [0] => 1 [1] => 1 [2] => 1 ) [5] => Array ( [0] => 1 [1] => 1 [2] => 1 ) )

preferences:
212.26 ms | 407 KiB | 357 Q