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@ 2014-06-26T21:18:41Z

<?php
if(isset($xxx)) {
	echo "isset<br>";
	echo var_dump($xxx);	
}
else {
	echo "notset<br>";
	echo var_dump($xxx);
}
?>

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

32.98 ms | 402 KiB | 5 Q