Category Navigation Problem

[ralphiooo]

Hi, I have setup the following array called list_categories which is in the format $list_categories[sub_category_id][category_id], ie say it has the following content:

Array
(
    [0] => Array
           (
              [0] => Array
                  (
                      [category_id] => 27
                      [sub_category_id] => 0
                      [category_name] => dsg
                      [description] => dfsg
                      [display_order] => 0
                      [status] => 1
                  )

              [1] => Array
                  (
                      [category_id] => 28
                      [sub_category_id] => 0
                      [category_name] => afs
                      [description] => dasfd
                      [display_order] => 0
                      [status] => 1
                  )

            )

     [27] => Array
          (
              [0] => Array
                  (
                      [category_id] => 29
                      [sub_category_id] => 27
                      [category_name] => dsdaf
                      [description] => asf
                      [display_order] => 0
                      [status] => 1

                )

        )

)

What I want to be able to do is loop through the array and display the categories in a list. So far I have put together the following code which loops through every category and displays its sub categories fine.

function get_select_categories($category_id, $prefix) {
	$select_categories = array();
								
	if (array_key_exists($category_id, $GLOBALS['list_categories'])) {
		foreach ($GLOBALS['list_categories'][$category_id] as $category) {
			$category['category_name']	= $prefix . $category['category_name'];
			$select_categories[]		= $category;
			$select_categories		= array_merge($select_categories, get_select_categories($category['category_id'], $prefix . '     '));
		}
	}

	return $select_categories;
}

echo '<ul>';

foreach (get_select_categories(0, '') as $category) {
	echo '<li>' . $category['category_name'] . '</li>';
}

echo '</ul>';

But say I was in a specific category ie category_id = 1 i want to limit it to:

- cat 1 (category_id = 1, sub_category_id = 0)
- sub cat 1 (category_id = 2, sub_category_id = 1)
- sub cat 2 (category_id = 3, sub_category_id = 1)
- cat 2 (category_id = 4, sub_category_id = 0)
- cat 3 (category_id = 5, sub_category_id = 0)

and if category_id = 8 it would be

- cat 1 (category_id = 1, sub_category_id = 0)
- cat 2 (category_id = 2, sub_category_id = 0)
- cat 3 (category_id = 3, sub_category_id = 0)
- sub cat 1 (category_id = 4, sub_category_id = 3)
- sub sub cat 1 (category_id = 4, sub_category_id = 4)
- sub sub cat 2 (category_id = 5, sub_category_id = 4)
- sub cat 2 (category_id = 6, sub_category_id = 3)
- cat 4 (category_id = 7, sub_category_id = 0)

I hope you can see the pattern now, basically I want to limit the loop to only show the results for the current category it is in.

I would appreciate it alot if someone could help. Thanks

 

[jpadie]

sorry - i don't see the pattern. can you try explaining your aims in words? I don't get how category id 3 can be "in" category_id 8

 

[ralphiooo]

damn that's cus I renamed it I'll repost the example:

But say I was in a specific category ie category_id = 1 i want to limit it to:

- cat 1 (category_id = 1, sub_category_id = 0)
- sub cat 1 (category_id = 2, sub_category_id = 1)
- sub cat 2 (category_id = 3, sub_category_id = 1)
- cat 2 (category_id = 4, sub_category_id = 0)
- cat 3 (category_id = 5, sub_category_id = 0)

and if category_id = 4 it would be

- cat 1 (category_id = 1, sub_category_id = 0)
- cat 2 (category_id = 2, sub_category_id = 0)
- cat 3 (category_id = 3, sub_category_id = 0)
- sub cat 1 (category_id = 4, sub_category_id = 3)
- sub sub cat 1 (category_id = 4, sub_category_id = 4)
- sub sub cat 2 (category_id = 5, sub_category_id = 4)
- sub cat 2 (category_id = 6, sub_category_id = 3)
- cat 4 (category_id = 7, sub_category_id = 0)

The second example should have been 4, basically it goes down as far as the category set and lists its sub categories. Also if the category set is not within a level it does not list its sub categories. Hope that makes things clearer.