I've got a brain-bender I'm wondering if anyone can help me clean up.
I've got a nasty procedural solution working, but it's SO ugly that I'm
almost embarassed to check it in to CVS....
Here goes:
I have this form with a bunch of checkboxes that represents a 2D Array:
[x] - Group 1
[x] - Item 1
[x] - Item 2
[x] - Item 3
[x] - Group 2
[x] - Item 1
[x] - Item 2
Now, here's the ugly part:
I need to tell the backend database what channels the user has
UNCHECKED on this form.
Since we only get back an array of what's been checked, there's some
diffing in order.
Also, the API I'm talking to wants a list of ALL the unchecked channels
each time I make the call -- it doesn't know about the current state of
the checkboxes.
So, what I've been doing is assembling a group of hidden form fields
that include ALL the groups and items involved, overloading the field
values like this:
<input type='hidden' value='PARENT_<group_id>'>
and
<input type='hidden' value='<parent_group_id>_<item_id>'>
From this, I can easily generate the two arrays to diff:
ALL Items, and Checked Items
I should also note that Item IDs are NOT unique, and I need to know
which Group they got unchecked in.
Currently, I loop over each Group in All Items, checking to see if each
Item ID is in the Checked Items array for that particular group.
If it isn't, it got unchecked, and I pop it onto a new array of excluded
Item IDs.
Then I loop over THAT to make the excludeItem() calls that update the
database.
So, my question is -- (i'm using PHP5, btw) is there a really good way
to diff a 2-D array like this without using a bunch of nested foreach loops.
Keep in mind that I still need to know what Group the Item belongs to,
as the Item IDs are not unique.
TIA,
Jeromie
The php_mysql group is dedicated to learn more about the PHP/MySQL web database
possibilities through group learning.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/php_mysql/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
