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@ 2015-03-23T06:32:52Z

<?php

var_dump(array_key_exists($GLOBALS['v']));
$v = null;
var_dump(array_key_exists($GLOBALS['v']));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_key_exists: documentation ( source)

preferences:dark modelive preview

45.4 ms | 402 KiB | 5 Q