Detecting if post data empty???

Hello,

I'm having a problem detecting if post data is empty.

I've got a search form on one page, that posts to a form on another
page. If the user doesn't enter anything, then I wanted to make the
variable equal a dot. But for some reason, even if you leave the form
input blank and just hit submit, the post variable is not detected as
empty using either isset($var) or empty($var). Neither of these work
and the form page that gathers the post data assumes that the variable
holds some value.

What would that value be? How else can I detect if the nothing has
been entered on the search form?

Thanks

"Marv" <marv@mister.com> wrote:

> Hello,
>
> I'm having a problem detecting if post data is empty.
>
> I've got a search form on one page, that posts to a form on another
> page. If the user doesn't enter anything, then I wanted to make the
> variable equal a dot. But for some reason, even if you leave the form
> input blank and just hit submit, the post variable is not detected as
> empty using either isset($var) or empty($var). Neither of these work
> and the form page that gathers the post data assumes that the variable
> holds some value.
>
> What would that value be? How else can I detect if the nothing has
> been entered on the search form?
>
> Thanks

Something like

if (trim($_POST['fieldname'])!='')
{
// whatever ...
}

Because yes, you're right. When the HTML form is created, the input values
by default are all empty strings. And when posted, all of these end up in
the $_POST array.

--
bonfils
http://kim.bonfils.com