"Tom Beidler" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I have a form with approximately 40 input fields. When a form is posted it
> sends an email and then builds a tab delimited $txt entry for a text file
on
> the server.
>
> The problem is that if a checkbox is not checked, when it's not required,
I
> don't get a blank entry in my tab file for the checkbox input. I'm
imploding
(snip)>
> Is there a way to send a blank value if the checkbox is not set? Should I
> use a completely different strategy? Have I said Thank you enough to
Rasmus
> Lerdorf and whomever else was involved in resuscitating the list?
>
I've had a similar project kicking about in my head, and this post finally
got me to try a few things.
The idea I had was for a "multi-questionnaire" system, where surveys are
created from a database query, scored by a common marking script, and the
results stored back to the database. Obviously, the marking script can't
know what inputs to expect...
My first idea was to create a parseable "variable-names-to-look-for"
variable, but that seemed unwieldy. Then I recalled someone complaining
about not being able to retrieve multiple input fields with the same name -
they only get the last ie most recent field set. ;-) and there's the
answer.
If you have a hidden input with the same name and a default value _before_
your checkbox input, then your checkbox will over-write it if it's checked;
otherwise you receive the default value!
ie
<input type="hidden" name="myvariable" value="No">
<input type="checkbox" name="myvariable" value="Yes">
if the checkbox is checked, $myvariable = "Yes", otherwise $myvariable =
"No" - exactly what you were looking for.
Better yet, because $myvariable only occurs once among the POSTed variables,
you can simply iterate through them, ie
foreach($HTTP_POST_VARS as $name => $val)
$outstr .= "<br>$name: $val";
See the attached file, 'test.php', for a simply demo.
begin 666 test.php
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!"@``
`
end
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