Looping value problem

Anon

Hi guys, My brain has just melted and I\'m not sure how to solve this problem.

I\'ve set up a form so that it creates a number of checkboxes depending on the contents in a database. In this case it lists

a number of available groups that you can select.

I\'ve named the checkboxes: Read$a where $a is a number between 1 and the total number of items in the database (it starts

at 1 and adds 1 via $a++; until there is no more results).

This gives me a form that has several checkboxes with the name: Read1, Read2, Read3 etc.

My problem is - I now want to loop through all the checkboxes and take out the values so I can work with them.

I thought that if I do a loop counting up from 1 to the last number (if the last checkbox is Read8 I would loop from 1 to

8) I could pick out the value. Something like this:

$a=1;
While ($a <= 8) {

$value=Read$a;

$value2=$Read.=$a;

$a++;
}

Not of it works. The first gives an error and the second returns nothing as a value.

So, help my melting brain - how do I take out the value of Read1, Read2 etc. in the loop?

/Björn

terje-s

Actually, I have never tried this as I don't like checkboxes 😉 However, you should for one thing be able to name them checkbox[1], checkbox[2], and use an array instead of a 'static' variable name such as checkbox1, checkbox2 etc. This would be my primary solution.

The secondary, in case you for some reason need or want to call them by an individual name for each checkbox, is variable variables. E.g. set $var1, $var2 and $var3 to 1. (Or whatever names you choose).

for ($x = 1; $x < 4; $x++) {
$varName = "var$x";
print $varName . " -> ". $$varName;
}

Anon

Thanks. My brain just came back online 🙂. After I posted the question I suddenly realized that I might as well use HTTP_POST_VAR["Read$a"] and pick out the value. And it worked.

Your solutions also are excellent. Not sure what I was thinking of. Sometimes you get blocked in your thoughts and miss the obvious.

Thanks again!

/Björn

guillermo

Hello,

You can just name all of your checkboxes like:

checkbox[] and of course with diferent values each.

The on the other page just do:

for ($i=0;$i<count($checkbox);$i++)
{
echo $checkbox[$i];
}

null values will not be accesible.

Guillermo