Form Elements - Help pls.

[Klendau]

Hi,

Ok, I've been scouring the web for the better part of an hour trying to figure this out.

Basically, all I want to do is have my FORM "validate" a few drop down lists and some radio buttons, but I don't entirely understand how to do it.

I can have my form validate input boxes without any trouble, but when it comes to the rest of the form - I'm lost.

As an example, here is what I have:

<select name="number">
    <option selected>Select</option>
    <option>1</option>
    <option>2</option>
    <option>3</option>
</select>

..and this one..

<input type="radio" name="yes">
<input type="radio" name="no">

All I want for to happen is that if the person who is filling in the form fails to select one of the options on both of these instances, the form will come back with an error message, as it currently does for my input boxes.

I'm using the $PHP_SELF variable as my form action.

Thanks in advance. 🙂

[diego25]

For drop down menus, if the user doesn't select anything, the browser will submit the default option, so $_POST['number'] will be defined, but it won't have any value. So you can use empty() to check for that.

For radio boxes, if the user doesn't choose anything, I don't think they get defined. So you can probably use isset().

Diego

[Weedpacket]

I'm not sure, but I think you'd also want to see if $_POST['number']=='Select'.

I agree about the radio buttons.