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@ 2014-09-05T19:23:10Z

<?php

function x() {
	global $hello;

	$hello = true;

	function y() {
		global $hello;

		var_dump($hello);
	}

	y();
}

x();

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

36.56 ms | 402 KiB | 5 Q