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@ 2016-11-14T18:19:38Z

<?php

$a = array(0, '0 ', null, '', 1);

foreach ($a as $s) {
    var_dump(empty($s));
}

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

66.74 ms | 402 KiB | 5 Q