creating a list with database values…

thara

I am trying to print a list something like this....

    

   Catagory 01
       subjects1   subjects4
       subjects2   subjects5
       subjects3   subjects6

Catagory 02
   subjects1   subjects4
   subjects2   subjects5
   subjects3   subjects6

Catagory 03
   subjects1   subjects4
   subjects2   subjects5
   subjects3   subjects6

One category has its own subjects. At the moment I have the category id and created a query to get its category name and its owned subjects. this is the query that I have created..

[code=html][code=php]
$categoryIds = implode(',', $_SESSION['category']);

$q = "SELECT c. category_id AS ci, c.category_name AS cn, s.subject_name AS sn, s.subject_id AS si
FROM category AS c
INNER JOIN category_subjects AS cs ON cs.category_id = c.category_id
INNER JOIN subjects AS s ON s.subject_id = cs.subject_id
WHERE c.category_id IN ($categoryIds)";

[/code][/CODE]
$r = mysqli_query( $dbc, $q) ;

Above query gives every categories and it own subjects. Its like a multidimensional array. My problem is I tried to print this date something like above list... But can not get it to work..

Is there someone to help me to this? Your ideas and comments are greatly appreciated.

Thank you.

Labtec

Can you show us what the array contains?

Can you show the results of this:

echo "<pre>";
print_r($r);
echo "</pre>";

Regards,

Labtec.

Bonesnap

Are you sure that $_SESSION['category'] is not actually empty?

thara

The query running properly and return values....

traq

thara;11022275 wrote:
The query running properly and return values....

Since that is the case,

Labtec;11022267 wrote:
Can you show us what the array contains?
echo "<pre>";
print_r($r);
echo "</pre>";

Also, you don't share any code that actually tries to print anything, so it's hard to say why it's "not working."

Labtec

Without seeing the structure of the multi-dimensional array it's hard to write you any code.

If you can post the results of the code in post #2, we can all help you much more. From re-reading your first post, it seems you have got values in the multi-dimensional array meaning that there must be a value in the $categoryIds variable otherwise I think your query would fail.

In fact, put this at the top your script, just after retrieving the session:

echo "<pre>";
var_dump($categoryIds);
echo "</pre>";

Then after your mysqli_query() call, put this:

echo "<pre>";
var_dump($r);
echo "</pre>";

Please post both sets of results.

Regards,

Lab.