note 22744 added to function.empty
| From: | nospam at deleete-spamfilter dot cheezy dot net | Date: | Fri, 28 Jun 2002 06:12:59 +0000 |
| Subject: | note 22744 added to function.empty | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-32358@lists.php.net to get a copy of this message | ||
Just to save someone the hours of teeth-grinding I just went through, a CheckBox form field does NOT
show up as set, if it is not checked.
If you go to a page without submitting a form, $_POST["checkboxName"] will evaluate as the
following:
empty($_POST["checkboxName"]) == true
isset($_POST["checkboxName"]) == false
("" == $_POST["checkboxName"]) == true
If you then submit the form with $_POST["checkboxName"] UNclicked, it will evaluate as the
following:
empty($_POST["checkboxName"]) == true
isset($_POST["checkboxName"]) == false
("" == $_POST["checkboxName"]) == true
There is no difference as far as PHP is concerned. This is a pain in the butt for me, and hopefully
it will be corrected sometime. I would *expect* that in the second instance, isset would be TRUE.
--
http://www.php.net/manual/en/function.empty.php
http://master.php.net/manage/user-notes.php?action=edit+22744
http://master.php.net/manage/user-notes.php?action=delete+22744
http://master.php.net/manage/user-notes.php?action=reject+22744