Nilaab, This sounds similar to what I was trying to do recently, i.e creating dependent dropdown boxes. Here's a link to a demo of the code that might be of interest to you. http://www.onlinetools.org/tools/easyselectdata/index.html
Cheers. Roger -----Original Message----- From: @ Nilaab [mailto:[EMAIL PROTECTED]] Sent: Thursday, December 05, 2002 7:36 PM To: Php-General Subject: [PHP] Need Redirection Trick... Hello Everyone, I have a simple problem that, I think, might require a little trick to be used. I have a list of products in a database that is organized by categories and subcategories. Categories can have as many subcategories as it wants, but some categories don't need to have a subcategory at all. In the following code "cat" refers to category and "subcat" refers to subcategory. cat_data and subcat_data refers to a multi-dimentional array, pulled from the DB, with values of an id and a name. example: cat_data[row_number][name_of_category] and cat_data[row_number][id]. Ok, before I ask the question, here's the code: [-------------- snip --------------] <?php include ("nay_general.php"); include ("$include_path/base_db.class"); // db $db = new base_db(); $cat_data = $db->get_cat_data(); for ($i=0; $i < count($cat_data); $i++) { echo '<a href="' . $PHP_SELF . "?cat_id=" . $cat_data[$i]["id"] . '">' . $cat_data[$i]["name"] . "</a><br />\n"; if ($cat_id) { $subcat_data = $db->get_subcat_data($cat_id); if ($subcat_data != 0 && ($cat_id == $cat_data[$i]["id"])) { for ($j=0; $j < count($subcat_data); $j++) { echo ' - <a href="' . $PHP_SELF . "?cat_id=$cat_id&subcat_id=" . $subcat_data[$j]["id"] . '">' . $subcat_data[$j]["name"] . "</a><br />\n"; } } elseif ($subcat_data == 0 && ($cat_id == $cat_data[$i]["id"])) { $subcat_id = 0; header("Location: $PHP_SELF?cat_id=$cat_id&subcat_id=$subcat_id"); } } } ?> [-------------- snip --------------] What this does is it lists all the categories in the database, initially. When the user clicks on a category, the script will check if the category has any subcategories associated with it. One of two things should happen after this. First, it should list all the subcategories directly below the category it is associated with, with a little indention to specify that they are subcategories. The subcategories listed will be a link that passes over the cat_id and subcat_id GET variables to the same page. example: category 1 category 2 - subcategory 1 - subcategory 2 - subcategory 3 category 3 . . . This part of the script works fine. The second thing that should happen is that if there are actually no subcategories for the selected category then subcat_id should equal 0 and the script should redirect back to the same page with the GET variables of cat_id and subcat_id (which is equal to zero at this point). The problem is that I cannot redirect with a header() function because content is already sent to the browser at the beginning of the script (the list of categories). Is there any other way that I can redirect and send the variables of cat_id and subcat_id to the page in the second situation mentioned earlier? Register Globals is on. - Nilaab -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
