3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = [ 0 => [ "1" => "1", "2" => "2", ] ]; var_dump($var); unset($var[0]["2"]); var_dump($var);
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(1) { [0]=> array(2) { [1]=> string(1) "1" [2]=> string(1) "2" } } array(1) { [0]=> array(1) { [1]=> string(1) "1" } }
preferences:
153.59 ms | 408 KiB | 5 Q