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@ 2013-06-23T04:57:26Z

<?php
var_dump(
    array_column(
        array(
            array(
                'a' => null,
                'b' => 16,
            ),
        ),
        'a'
    )
);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_column: documentation ( source)

preferences:dark modelive preview

33.14 ms | 402 KiB | 5 Q