Submitting only checked boxes is just how HTTP works.
A cool trick you can use is to do this:
name=noticias[$id] value='m'
In other words, you can convey *MORE* info by including a specific "key"
with each checkbox element from the sending script.
For keeping track of previous values, though, I usually have two INPUTs in
my form.
name=noticias[$id] value='m'
name=noticias_old[$id] value='m'
Or something similar.
If you are worried about security and people submitting bad data, it might
be better to use sessions or something to track the user and their
"previous" values though.
You still want to verify valid input from the user on the new value, of
course.
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----- Original Message -----
From: Julio Nobrega Trabalhando <[EMAIL PROTECTED]>
Newsgroups: php.general
To: <[EMAIL PROTECTED]>
Sent: Thursday, August 30, 2001 9:34 AM
Subject: Non selected submited form-array values
> Hi All,
>
> I already spent too much time trying to solve this one by myself, so I
am
> in need of a little bit of help.
>
> I have a form with checkboxes, all with the same name
(name="noticias[]").
> When it is submited, only the selected checkboxes become a value on the
> array $noticias on the next page. So:
>
> <checkbox name="noticias[]" value="m" checked>
> <checkbox name="noticias[]" value="w">
>
> $noticias will have only one value, 'm'. Right? I come to this
conclusion,
> but I might be wrong. The values are dinamic, which means not always
certain
> boxes will be checked or have the same value, form by form. So form X can
> have 3 checkboxes with different values than form Y with 8 checkboxes.
>
> Okay. Now I need to compare the submited values with another 'parsed
> string', or not if I took the wrong path from the beggining to solve this
> problem. For example:
>
> $string = 'w=1&r=0&m=0';
> parse_str($string); // Will become $w = 1, $r = 0, etc...
>
> Back with the array $noticias, I need to compare the selected values
with
> the ones on the parsed string, still mantaining the parts equal to zero.
If
> array $noticias will only have values with the checked boxes, how can I
> 'update' the $string (returning a new one, for example) with the new
checked
> boxes and still maintain the ones that equals to zero, if the $string can
> have an uncertain number of values after parsed?
>
> That's a hard one, I believe ;-)
>
> Say, just to clarify, another example:
>
> $noticias = Array("m","d")
> $string = "m=0&d=1&w=1&d=0";
>
> The resulted string would need to be: "m=1&d=1&w=0&d=0";
>
> A solution I am trying to unfold for dinamic (or uncertain) strings, it
to
> make a function that one of the parameters is the 'old string', which I
> would pass to this function, to serve as a 'base' to be updated with the
> values from the form array ($noticias).
>
> But I am stuck at the part where this old string is compared, and its
> values are updated if the form's checkboxs are selected, or not.
>
> Am I missing some simple function from the manual that can do this for
me?
> If not, how can I accomplish this result?
>
> Thanks a lot if you read it until here ;-)
>
> --
>
> Julio Nobrega
>
> A hora está chegando:
> http://toca.sourceforge.net
>
>
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