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@ 2015-03-07T05:15:44Z

<?php

if (false) {
    $willNeverBeDefined = true;
}
$result = compact('willNeverBeDefined');
var_dump($result, empty($result), $result === array());

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
compact: documentation ( source)

preferences:dark modelive previewkey bindings

75.51 ms | 2040 KiB | 5 Q