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@ 2014-09-04T13:14:17Z

(<?php


function hu ($a, $b=NULL)
{

if(!isset($b))
	var_dump($b);

}

hu ( 1 );

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

39.98 ms | 402 KiB | 5 Q