php顯示類別和子類別

Question

好的，現在我有兩個表categories和subcategories如下所示

Categories:
  id
  title
  description

Sub Categories:
  id
  catid
  title
  description

現在，子類別的“ catid ”將具有類別“ id ”的值，我想對我的分組並循環我的類別和子類別，並像

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 />");
     }
}

這應該顯示您的類別和子類別：

類別：Category1（這是category1）
子類別：SubCategory1這是子類別1
子類別：SubCategory2這是子類別2
類別：Category2（這是category2）
子類別：Subcategory3這是子類別3

等等