note 18228 added to function.isset
| From: | jasper at gremmen dot net | Date: | Tue, 15 Jan 2002 11:10:31 +0000 |
| Subject: | note 18228 added to function.isset | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-24836@lists.php.net to get a copy of this message | ||
Here are some conditions and their outcome (true or false)
isset("tekst") true
("tekst")!="" true
("tekst") true
("tekst")==NULL false
isset(true) true
(true)!="" true
(true) true
(true)==NULL false
isset(false) true
(false)!="" false
(false) false
(false)==NULL true
isset("") true
("")!="" false
("") false
("")==NULL true
isset(0) true
(0)!="" false
(0) false
(0)==NULL true
isset(1) true
(1)!="" true
(1) true
(1)==NULL false
isset("0") true
("0")!="" true
("0") false
("0")==NULL false
isset("1") true
("1")!="" true
("1") true
("1")==NULL false
isset(NULL) false
(NULL)!="" false
(NULL) false
(NULL)==NULL true
--
http://www.php.net/manual/en/function.isset.php
http://master.php.net/manage/user-notes.php?action=edit+18228
http://master.php.net/manage/user-notes.php?action=delete+18228
http://master.php.net/manage/user-notes.php?action=reject+18228