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@ 2018-06-01T09:05:56Z

<?php

var_dump(empty(''));

var_dump(empty(true));

var_dump(empty(false));

var_dump(empty(null));

$array=[];
var_dump(empty($array['notset']));

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

38.83 ms | 404 KiB | 5 Q