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@ 2014-07-18T08:41:12Z

<?php
$null = null;
$x = array(
    $null => 'null',
    0 => 0,
);

var_dump($x);

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

36.87 ms | 402 KiB | 5 Q