note 52397 added to function.defined

I had a litte problem which costed me a lot of time today. You *must* use defined() with quotes: Right: <?php //Example echos "constant definded!" as it should do! //Set error reporting error_reporting(E_ALL); //Define your constant define('constant', 'Test'); if (defined('constant')) //Returns true { echo "constant definded!"; } else { echo "constant not definded!"; } ?> Wrong: <?php //Example echos "constant not definded!" //Set error reporting error_reporting(E_ALL); //Define your constant define('constant', 'Test'); if (defined(constant)) //Returns NOTHING, NO false, NO true and NO notice { echo "constant definded!"; } else { echo "constant not definded!"; } ?> You may think that's clear but PHP will give you NO notice or warning, even with error_reporting(E_ALL) while parsing defined(constant) when 'constant' is defined! PHP should warn you with a notice because it not even acts like when using $array[key] instead of $array['key']! It won't return true, flase or a notice!. So take care of that! Tested on PHP 4.3.6 and PHP 5.0.3 on Apache/2.0.49 (Win32). Andreas Haerter [http://www.bitkultur.de] ---- Manual Page -- http://www.php.net/manual/en/function.defined.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+52397 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+52397&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+52397&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+52397&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+52397&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+52397&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+52397&report=yes Search -- http://master.php.net/manage/user-notes.php