note 110829 added to language.operators.logical
| From: | dartello at gmail dot com | Date: | Wed, 12 Dec 2012 14:35:46 +0000 |
| Subject: | note 110829 added to language.operators.logical | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-192489@lists.php.net to get a copy of this message | ||
Unlike in C/C++ the invertor (Not) in PHP assumes a string:
<?php
$a = 1;
$t = !$a;
var_dump($t);
?>
The above example will output:
string(0) => ""
To approach the C/C++ handling, this can be solved as follows:
<?php
$a = 1;
(int) $t = !$a;
var_dump($t);
(bool) $u = !a;
var_dump($u);
?>
The above example will output:
int(0)
bool(false)
----
Server IP: 69.147.83.199
Probable Submitter: 72.52.91.2 (proxied: 84.27.119.117)
----
Manual Page -- http://php.net/manual/en/language.operators.logical.php
Edit -- https://master.php.net/note/edit/110829
Del: integrated -- https://master.php.net/note/delete/110829/integrated
Del: useless -- https://master.php.net/note/delete/110829/useless
Del: bad code -- https://master.php.net/note/delete/110829/bad+code
Del: spam -- https://master.php.net/note/delete/110829/spam
Del: non-english -- https://master.php.net/note/delete/110829/non-english
Del: in docs -- https://master.php.net/note/delete/110829/in+docs
Del: other reasons-- https://master.php.net/note/delete/110829
Reject -- https://master.php.net/note/reject/110829
Search -- https://master.php.net/manage/user-notes.php