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@ 2016-01-27T11:47:32Z

<?php

$ao = new ArrayObject([2, 3, 8, 9]);

var_dump(array_walk_recursive($ao, function($item, $key){
    echo $key . ' => ' . $item . PHP_EOL;
}));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_walk_recursive: documentation ( source)

preferences:dark modelive preview

29.62 ms | 402 KiB | 5 Q