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@ 2014-03-05T14:27:37Z

<?php

class A
{
}

class B
{
    public function __destruct()
    {
        var_dump(isset($GLOBALS['a']));
    }
}

$a = new A();
$b = new B();

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive preview

41.99 ms | 402 KiB | 5 Q