Question

Ok now i have two table categories and subcategories like this

Categories:
  id
  title
  description

Sub Categories:
  id
  catid
  title
  description

Now the ‘catid‘ of the subcategories will have the value of categories ‘id‘ and i want to group my and loop my categories and sub categories and display it like

Category
  subcat
  subcat

categories
  subcat
  subcat

Answer 1

$catquery = "select * from categories"; 
$res = mysql_query($catquery)

while (list($id, $title, $description) = mysql_fetch_row($res)){
     $subquery = "select id, title, description from subcategories where catid = {$id}";
     $res = mysql_query($subquery);
     echo("Category: {title} ({description})<br />");
     while (list($sid, $stitle, $sdescription) = mysql_fetch_row($res)){
          echo (" Subcategory: {stitle} {sdescription}<br />");
     }
}

This should display your categories and subcategories as such:

Category: Category1 (This is
category1)
Subcategory: SubCategory1
This is subcategory1
Subcategory:
SubCategory2 This is subcategory2
Category: Category2 (This is
category2)
Subcategory: Subcategory3
This is subcategory3

and so on