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Analysis & Solutions wrote:
> On Fri, Jul 12, 2002 at 10:59:00PM -0400, Blue Presley wrote:
>
>>Hello. I have a form that I would like to use checkboxes.
>>... snip ...
>>I've been told that if I want to manipulate each
>>one then I should use 'name=checkbox[]' and make an array out of it. okay,
>>fine. but how do i access them in my PHP script? I know I have to use the
>>$_POST[] array, but this creates a multidiminsional array, yes? do i access
>>it like $_POST[checkbox[1]]?? or $_POST[checkbox][1]??
>
>
> The latter. But note, if a box isn't checked, it's not going to be
> sent, so won't be in the array.
>
> <form>
> <input type="checkbox" name="StateID[]" value="32" /> NV
> <input type="checkbox" name="StateID[]" value="33" checked /> NH
> <input type="checkbox" name="StateID[]" value="34" checked /> NJ
> </form>
>
> In this case $_POST['checkbox'][0] would be 33 and ...[1] would be 34.
>
> Sometimes it's handy to identify the key upfront:
>
> <form>
> <input type="checkbox" name="StateID[32]" value="608" /> NV
> <input type="checkbox" name="StateID[33]" value="2" /> NH
> <input type="checkbox" name="StateID[34]" value="40" checked /> NJ
> </form>
>
> That would yield $_POST['checkbox']['34'] = 40.
>
> A nice way to handle incomming checkboxes is this:
>
> while ( list($Key, $Val) = each($checkbox) ) {
> # do what you need to do...
> # for example, show what was sent...
> echo "<br />$Key = $Val\n";
> }
Just one thing, as someone noted a week ago or so, you can't use the []
syntax *and* javascript. If you also need to process your checks from
jscript side you shall resort to some older method and have your
variables called like
<input type="checkbox" name="StateID_32" value="608" /> NV
<input type="checkbox" name="StateID_33" value="608" /> NV
then process it with variable variable names (the $$ syntax).
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