Multiple checkboxes

[techmeister]

Hey there:

How does one obtain the values of multiple checkboxes that were generated on-the-fly???

Each of my checkbox's are 'affiliated' with a MySQL database primary key, so I CAN identify them individually - but it is HOW this identification is done and subsequently either echoed to a page or passed thru to an email is what I am after.

I've looked through the archives but nothing seems to relate specifically to this situation...

Many thanks.
Russ

[reeferd]

Hmm...
I`m not quite sure what you need to hear here... but.

If you call the db, and write checkboxes like this f.eks:

while ($e = mysql_fetch_array($sql)) {

echo "
<checkbox name=\"$e[col1]\" value=\"$e[col1]\">";

Then you will get a checkbox for each of the rows in your table...

Then when the user submits this form you can access the various var`s by doing a variable varible thingy...

you know $$abc or something...

argh.. I lost my head... what am I talking about... gah gah gah... 🙁

sorry.-

[techmeister]

Haha Don't worry Weezer, try this out:

I already have the number of checkboxes that I need - they are there if someone wants to sign-up for something. They can signup for for more than one thing (hence use of checkboxes) but I wish to know how to get

a: the number of boxes checked and
b: their individual values, both afer they click 'submit' or the rather more fashionable 'go!'

Cheers..
Russ 😉

[reeferd]

I see.....
If you have an array containing all the variables from the previous form

Then maybe you can loop through the array looking for vars with assigned values...

that way you will get the number of checkboxers checked, and the values for their corresponding variable.

Hmm....
Do you know the name of each variable you set in the checkboxes?

[srihari]

mk an array of chkboxes like $chkbox[$i] where i is the no. of chkboxes.

do this while loading the chkboxes in page and while submitting u can run thru a loop to check

if ($chkbx[$i]==true) {
//updated the respective key to true in ur db or whatever operation u want to perform
}

i hope this will solve ur problem

best of luck

rgds
SS

[techmeister]

Srihari & Weezer - cheers so far but:

I realise I'll need to uitilies a loop somwhere - the code below is where the checkbox is 'setup'. Depending on the number of associated records, then that number of checkboxes appears. A single HTML form surrounds the whole thing with a single submit button.

Once submit has been hit, a script takes the values of the checkboxes and places them in an email. Most of this I can do, but I need to uniquely identify/associate each checkbox's value with the id of the record set it is sitting in.

while ($row = mysql_fetch_array($result)) {
$chk = $row['chk'];

if (($chk == "y") || ($chk == "Y")) {
$chk = "
<input type=\"checkbox\" name=\"signup\" value=\"$an-ID\" unchecked>";
}
//end if
}
//end while loop

How do I associate a dynamically gernerated checkbox value with a row's unique id??

Cheers for your perceverence!!
Russ...

[srihari]

instead of giving name=signup make the chkbox itself as an array. signup and everytime increment i so that u get unique name for each of the checkboxes.
then it will become easy to retrive that value also.
printf("<input type=checkbox name=signup[%s]value=$an-ID unchecked>",$i);

now u'll hv signup[0],signup[1] etc..

chk whether this will help u

rgds
SS

[techmeister]

Still aint workin'!

No matter what loop I employ, or how many boxes I check, a single: 'Array' is displayed on my page and in the email...!!

What the ^{&(@;&&%$%£$:'#!&$-%!!} is going on!! 😉

Even if your method worked for me, I still wouldn't be able to associate my DB row ID with its respective dynamically generated checkbox...

Never have I been so stumped....!!!

Cheers!

Russ

[reeferd]

A single "array"???
What do you mean by this...
How do you echo out the array in your mail??

(Are your row ids numbers??
if so... then they cant be set as var`s..)

[srihari]

Hi Russ,
just chk whether this will help u.

// While loading the page
while ($row = mysql_fetch_array($result)) {
//write the appropriate stat to retrive rows from the db
$val = $myrow['DB_row_ID'];
printf("<input type=checkbox name=signup[%s] value=[%s] unchecked>",$i,$val);
//increment i
}
//end if

// when submitted is clicked

for ($cnt=0; $cnt=$i; $i++){
if ($signup[$i]=="true") //just see how to find the selected checkbox
{
$str= $str . $signup[$i] //which will have the value of $signup[$i]
}
}
//once u come out of the loop
// u can attach the $str to mail

?>

Best of luck

Rgds
SS