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@ 2015-04-28T09:56:33Z

<?php

$keys = array(1,2,3,4,5);

function myFunction($key){
    return array_key_exists($key, $array);
}

array_walk_recursive($keys, 'myFunction');

Output
Performance
VLD
References
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array_walk_recursive: documentation ( source)

preferences:dark modelive preview

41.83 ms | 402 KiB | 5 Q