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@ 2014-04-01T14:35:35Z

<?php
error_reporting(E_ALL);
function out(&$x) { $x = 'out'; }
out($c = NULL);
var_dump($c);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
error_reporting: documentation ( source)

preferences:dark modelive preview

39.37 ms | 402 KiB | 5 Q