Re: [PHP] Where am i screwing up?

From: "Ryan A" <ryan@jumac.com>
> I am just screwing around and getting used to arrays with a "foreach"
thanks
> to Michael,Jan and Evan from this list and have run into problems.
>
> My requirment is pretty simple (code is below too)
> 1)unset all the sessions that might have been set with reference to the
> hardcoded array ($vars)
> 2)if any checkboxes have been set from the previous form then set that
> session
> needless to say, its not working, am too new at this to know where my
fault
> is so any help is greatly appreciated.
>
> I have even added a few comments as to what i was thinking....tell me if i
> was wrong.
>
> **************Start code************************
> <?php
> $vars = Array('noPlatform','noPrice','noSfee','noSpace'); // this
> corresponds to the "name=" of each checkbox
>
> foreach ($vars as $key) // clear all previous sessions
> {
> if(isset($_SESSION['$key']))
> {
> unset($_SESSION['$key']);
> }
> }
> echo "done1"; //just checking program execution
>
> foreach ( $vars as $vvvv ) // if any checkboxes were checked create a
> session for them
> {
> ${$vvvv} = ( isset($_POST[$vvvv]) ? 1 : 0 );
>
> if($vvvv==1)
> {
> $_SESSION[$vvvv];
> echo $vvvv; //getting no output from here...I just put it here for
> testing
> }
> }
> echo "done2"; //just checking program execution
> ?>
>
> ****************End code************************

How about you name your checkboxes as:

name="setting[xx]"

where xx is from your $vars array above. You'll end up with

name="setting[noPlatform]" value="1"
name="setting[noPrice]" value="1"
etc...

Now, you'll have $_POST['setting'] that'll contain the checked boxes.

To put those in session:

$_SESSION['setting'] = $_POST['setting'];

To see which boxes were checked...

$checked = array_keys($_POST['setting']);
or
$checked = array_keys($_SESSION['setting']);

$checked now an array similar to your $vars above but it only contains the
values that were checked.

To find out which checkboxes were NOT checked, you could use:

$not_checked = array_diff($vars,$checked);

Easy, eh?? Hope that helps.

---John Holmes...