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@ 2014-01-09T07:27:09Z

<?php

$mainArray = array(
    0 =>array(
        "key1" => array(7,4,5),
        'key2' => array('cc','aa')
    )
);

array_multisort($mainArray);

var_dump($mainArray);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_multisort: documentation ( source)

preferences:dark modelive preview

44.62 ms | 402 KiB | 5 Q