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@ 2015-04-27T12:13:22Z

<?php

$a1 = array("a" => array("1"));
$a2 = array("a" => array());

var_dump(array_merge($a1, $a2));
var_dump(array_merge($a2, $a1));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_merge: documentation ( source)

preferences:dark modelive preview

42.77 ms | 402 KiB | 5 Q