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@ 2015-04-08T21:29:47Z

<?php

$a1 = array('A' => 3, 'B' => 4);
$a2 = array();

print_r(array_keys($a1));

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
array_keys: documentation ( source)

preferences:dark modelive preview

52.46 ms | 402 KiB | 5 Q