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@ 2014-10-31T16:08:02Z

<?php
$a = '0';
$b = '  ';
$c = 0;
$d = NULL;
var_dump(empty($a));
var_dump(empty($b));
var_dump(empty($c));
var_dump(empty($d));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive preview

39.29 ms | 402 KiB | 5 Q