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@ 2014-06-18T09:01:09Z

<?php
$a = null;
$a++;
var_dump($a);

$a = null;
$a--;
var_dump($a);


$a = false;
$a++;
var_dump($a);

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

45.37 ms | 402 KiB | 5 Q