In writing the script, though, there are two points. I don't always use
checkboxes, sometimes I just want to update all the records on the
form. Eg I have a series of images and related text each with their ID
in the database table, on clicking update all the form elements get
submitted and I need to relate the relevant image, text, etc with the
table ID. So I can't rely on checkboxes which only get posted if
ticked. So again I have to iterate through all possible IDs. Which
normally can be done but it is longer, eg because the images on the page
in the first place may not be the result of a simple select query. So I
suppose the solution there is to have a hidden field with all the IDs as
a string, explode that and then iterate through that. Eg
<input type=hidden value="1_2_3" name="all_IDs">
$IDs=explode("_",$_POST['all_IDs']);
and that gives me the table IDs to do update queries on etc.
John
ioannes wrote:
Actually, you are right, as you just put the checkbox index in the
POST and get the value from there. So you just need the number of
checkboxes...sorry.
ioannes wrote:
Yes, Tedd, this does however incur the overhead of find out what i
is, because it could be a range of IDs from the database, not
necessarily a count of the checkboxes on the page:
"
for ($i = 1; $i <= 4; $i++)
{
$a = 'a' . $i;
$b = 'whatever' . $i;
if($_POST[$a] == 'on')
{
my_array[] = $_POST[$b]
}
}
"
John
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