note 76839 added to language.control-structures
| From: | Sinured at osu1 dot php dot net | Date: | Wed, 01 Aug 2007 18:59:59 +0000 |
| Subject: | note 76839 added to language.control-structures | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-129110@lists.php.net to get a copy of this message | ||
As mentioned below, PHP stops evaluating expressions as soon as the result is clear. So a nice
shortcut for if-statements is logical AND -- if the left expression is false, then the right
expression canât possibly change the result anymore, so itâs not executed.
<?php
/* defines MYAPP_DIR if not already defined */
if (!defined('MYAPP_DIR')) {
define('MYAPP_DIR', dirname(getcwd()));
}
/* the same */
!defined('MYAPP_DIR') && define('MYAPP_DIR', dirname(getcwd()));
?>
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Server IP: 217.13.201.10
Probable Submitter: 172.182.40.166
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Manual Page -- http://www.php.net/manual/en/language.control-structures.php
Edit -- https://master.php.net/note/edit/76839
Del: integrated -- https://master.php.net/note/delete/76839/integrated
Del: useless -- https://master.php.net/note/delete/76839/useless
Del: bad code -- https://master.php.net/note/delete/76839/bad+code
Del: spam -- https://master.php.net/note/delete/76839/spam
Del: non-english -- https://master.php.net/note/delete/76839/non-english
Del: in docs -- https://master.php.net/note/delete/76839/in+docs
Del: other reasons-- https://master.php.net/note/delete/76839
Reject -- https://master.php.net/note/reject/76839
Search -- https://master.php.net/manage/user-notes.php