note 117705 deleted from function.isset by cmb
| From: | cmb@php.net | Date: | Sun, 10 Feb 2019 11:26:09 +0000 |
| Subject: | note 117705 deleted from function.isset by cmb | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-210217@lists.php.net to get a copy of this message | ||
Note Submitter: ericg at arty-web-design dot com
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I found something interesting while working with isset() in PHP5.5+
<?php
$a = "foo";
$b = "bar";
var_dump(isset($a, $b)); //returns true
unset($b);
var_dump(isset($a,$b)); // returns false (as expected);
...BUT...
var_dump(!isset($a,$b)); // STILL returns true!