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@ 2015-04-07T08:49:48Z

<?php

$a = array('052' => 'nanana');
$b = array('042' => 'wayne');
$c = array(42 => 'batman');
$d = array('0fail' => 'bruce');

var_dump(array_merge($a, $b));
var_dump(array_merge($a, $c));

var_dump(array_merge($a, $d));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

46.25 ms | 402 KiB | 5 Q