note 98536 added to function.unset
| From: | HayleyWatson at osu1 dot php dot net | Date: | Mon, 21 Jun 2010 23:53:27 +0000 |
| Subject: | note 98536 added to function.unset | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-170356@lists.php.net to get a copy of this message | ||
If you list several variables at once in the unset(), they will be unset in the order that you list
them:
<?php
unset($a, $b, $c);
?> is exactly the same as <?php
{
unset($a);
unset($b);
unset($c);
}
?>
They are not (at least for now) all unset at the same time.
So the following code does NOT unset $array['bar'] and leave $array empty:
<?php
$foo = 'bar';
$array = array('bar'=>17);
unset($foo, $array[$foo]);
print_r($array);
?>
Instead it triggers a Notice about an undefined variable $foo, and leaves $array unchanged.
----
Server IP: 69.147.83.197
Probable Submitter: 219.89.233.43
----
Manual Page -- http://www.php.net/manual/en/function.unset.php
Edit -- https://master.php.net/note/edit/98536
Del: integrated -- https://master.php.net/note/delete/98536/integrated
Del: useless -- https://master.php.net/note/delete/98536/useless
Del: bad code -- https://master.php.net/note/delete/98536/bad+code
Del: spam -- https://master.php.net/note/delete/98536/spam
Del: non-english -- https://master.php.net/note/delete/98536/non-english
Del: in docs -- https://master.php.net/note/delete/98536/in+docs
Del: other reasons-- https://master.php.net/note/delete/98536
Reject -- https://master.php.net/note/reject/98536
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