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@ 2015-04-03T07:55:59Z

<?php

$a = '';
$b = null;
$c = false;

var_dump('' === $a, '' === $b, '' === $c, empty($b), empty($c));

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

39.31 ms | 402 KiB | 5 Q