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@ 2014-01-18T09:16:16Z

<?php
class Test {
    function __construct($num=null) {
        var_dump($GLOBALS['a']); 
    }
}
$o = new Test($a=2);

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

38.39 ms | 402 KiB | 5 Q