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run code in 300+ PHP versions simultaneously
<?php $array1 = array('test1' => array('blah', 'blahd')); $array2 = array('test2' => array('blah1', 'blahd2')); var_dump($array1 + $array2);
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 - 8.3.6
array(2) { ["test1"]=> array(2) { [0]=> string(4) "blah" [1]=> string(5) "blahd" } ["test2"]=> array(2) { [0]=> string(5) "blah1" [1]=> string(6) "blahd2" } }

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307.69 ms | 406 KiB | 460 Q