Receiving values from multi-select listbox...

sroughley

Hey all.

When a form is submitted that contains a listbox with multiple items selected, how can I access the values of the selected items in the listbox? Are they stored in the post vars?

Regards.

Steve.

cgraz

well you'd have to make sure that the name you used in you form ended with [] to signify an array: for example

Then you'd have access to the array $_POST['bla']

you could loop through it to grab the values.

Cgraz

sroughley

Cheers for the reply. Things is, I am already using JavaScript to manipulate the listBoxes, and I don't think I can refer to a variable in JavaScript if it is named something[]. Am I a bit stuck here then?

Regards.

Steve.

sroughley

OK. I have an idea, but just need some verification. I'm thinking of using two identifiers for the SELECT field, one for Javascript (ID) and one for PHP (NAME). If I can reference the SELECT field in Javascript using the 'ID=region' attribute, but keeping the 'NAME=region[]' attribute for PHP:

It will be NAME="region[]" that is used to identify the array of values stored in region, in the POST vars won't it?

Regards.

Steve.

BuzzLY

Have you tried it yet? I did verify last night that it won't work with the "[]"'s... any luck with the ID?

[edit]
I just checked it out, and you are correct. By adding the ID tag, Javascript works correctly. However, you'll still need to verify that PHP still sees the select as an array...

[edit2]
... which it seems to. Looks like the case is solved 🙂

sroughley

Cheers for the help! Yeah, it works a treat now. All I had to do was add the ID= tags to the SELECT elements and that's it. Didn't have to alter the JS or anything. Now JS picks up on the ID tag and PHP picks up on the NAME tag.

Thanks again.

Regards.

Steve.