3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = [ 'foo' => [ 'var1' => 1, 'var2' ] ]; var_dump($obj); $item = $obj['foo'][0]; var_dump($item);
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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(1) { ["foo"]=> array(2) { ["var1"]=> int(1) [0]=> string(4) "var2" } } string(4) "var2"
preferences:
203.43 ms | 404 KiB | 292 Q