Php checkboxes

Question

Anyone have a piece of simple php coding that gets
informatiom from a
set of checkboxes and checks to see that at least one
checkbox has been
ticked by the user?
Or isnt it that simple?
Thanks
Os

Answer 1

Hi Gary,
Thanks for taking the time to respond. I know you are good at
the php
stuff, wish I was too.
That looks simple enough, once it's down on paper :)
I'm going to try and integrate the examples into my existing
set up in
the next day or so and see if I get a result.
I'm gradually learning a bit more about php but I'm going
nowhere as
fast as I would like too :(
Thanks
Os
Gary White wrote:
> When a form is submitted, checkbox values are only sent
if the checkbox
> is checked. any unchecked checkboxes are treated as if
they weren't even
> there. There are at least a couple of different
approaches to validating
> that. Which would be best would depend on what it is
you're doing.
>
> Typically, when you have a group of checkboxes and you
want at least one
> of them checked, they are related in some way. If that's
the case, I'll
> usually name them the same so they'll be treated as an
array:
>
> <input type="checkbox" name="colors[]"
value="red">
> <input type="checkbox" name="colors[]"
value="green">
> <input type="checkbox" name="colors[]"
value="blue">
>
> You could then test it like this:
>
> if(isset($_POST['colors'])){
> // at least one was checked
> }else{
> // nothing was checked
> }
>
> If that isn't appropriate and you need to name them
differently, you'd
> need to test for each individual name:
>
> <input type="checkbox" name="name" value="widget">
> <input type="checkbox" name="size" value="large">
> <input type="checkbox" name="colors"
value="green">
>
> if(
> isset($_POST['name']) ||
> isset($_POST['size']) ||
> isset($_POST['color'])
> }{
> // at least one was checked
> }else{
> // nothing was checked
> }