Variable problem

Anon

It's very possible that I am doing things in a difficult way, but I am asking anyways.

I have a page which lists a varying number of records from a db in a table, each one with a check box in front of them. In the checkbox value I put the ID of each record, the names of all checkboxes are "name1, name2, name3", etc. When the form is submitted, I want the selected records to be deleted from the database.

I tried to do this by doing a for statement checking for values of checkboxes with names "name" and then the counter "i". However, how can I concatenate the name of this variable and use it?

For example, how can I read the value of the checkbox name26. If I do the for with counter i, my first hope was doing something like

for ($i=0; $i<=50; $i++) {
if ($name$i<>"") {
// do my stuff
}
}

but it doesn't work.

Thanks for any help,
Bernhard S.

ccgorman

So your check boxes are named as name1, name2, name3... make them a value of 1, ie

Now on the processing page you can use the following.

$checkbox="";
for ($i=1;$i<$num_boxes;$i++) {
$checkbox="name".$i;
if ($$checkbox) {
//do your stuff
}
}

//note the $$, it will get the value, which is 1 if ticked NULL if not.

-David

joshk

You could use $HTTP_POST_VARS["name" .$i] to concatenate the var.

Anon

Why not just use an array?

To build it, just change the html to read

... name='name[$i]' ...
rather than
... name='name$i' ...

Cycling through an array is very simple.
There are many methods, but this is my favorite:
do
{
// your stuff
}
while(next($name_ar));

qingping

look here;
maybe there are a lot,but i think the best...

html tags
...
<?php $i=1;?>
<input type="text" name="<? echo "name".$i;$i++?>">
...
<?php
for($num=1;...;...)
{
if(${"name".$num}){...}
}