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@ 2018-07-17T18:05:31Z

<?php

$emptyString = '';
$zeroInt     = 0;
$zeroString  = '0';

var_dump(empty($emptyString));
var_dump(empty($zeroInt));
var_dump(empty($zeroString));

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

52.02 ms | 402 KiB | 5 Q