ビルメニューは、私は以下のコードを使用して動的メニューを作成しようとしています

Question

遅すぎるが、それは負荷に時間がかかりすぎる：

<?php 
ob_start(); 
include ('admin/db/db.php'); 

echo '<li><a href="#">Exports</a>'; 
$sql3 = "SELECT * FROM category_master where type = 'Export' order by  sequence asc "; 
$result3 = mysqli_query($connection, $sql3); 

if (mysqli_num_rows($result3) > 0) 
    { 

// output data of each row 

echo '<ul>'; 
while ($userrows3 = mysqli_fetch_assoc($result3)) 
    { 
    $cid = $userrows3['product_category_id']; 
    $cname = $userrows3['category_name']; 
    echo '<li><a href="category_details.php?cid=' . $cid . '&cname=' . $cname . '">' . $cname . '</a>'; 
    $sql4 = "SELECT group_product FROM products,category_master,cat_wise_pro where category_master.product_category_id = cat_wise_pro.category_id and products.product_id = cat_wise_pro.product_id and category_master.product_category_id =$cid group by products.group_product "; 
    $result4 = mysqli_query($connection, $sql4); 
    if (mysqli_num_rows($result4) > 0) 
     { 

     // output data of each row 

     echo '<ul>'; 
     while ($userrows4 = mysqli_fetch_assoc($result4)) 
      { 
      $gname = $userrows4['group_product']; 
      echo '<li><a href="product_details.php?gname=' . $gname . '">' . $gname . '</a>'; 
      $sql5 = "SELECT product FROM products,group_products where products.group_product = group_products.group_product and products.group_product = '$gname'"; 
      $result5 = mysqli_query($connection, $sql5); 
      if (mysqli_num_rows($result5) > 0) 
       { 

       // output data of each row 

       echo '<ul>'; 
       while ($userrows5 = mysqli_fetch_assoc($result5)) 
        { 
        $pname = $userrows5['product']; 
        echo '<li><a href="product_info.php?pname=' . $pname . '">' . $pname . '</a>'; 
        } 

       echo '</ul>'; 
       } 
      } 

     echo '</ul>'; 
     } 
    } 
} 

echo '</ul>'; 
?> 

は、私が代わりにビューを使用する必要がありますテーブル... find below the view i create

どのようにすればいいですか？あなたのコードは何

Answer 1

は次のとおりです。データベースへの1 + C x Gクエリーを送信

categories = load C categories from DB 
foreach category: 
    groups = load G groups from DB 
    foreach group: 
     products = load products from DB 

。あなたがすべきことは次のとおりです。

products = load products with groups with categories 
$tree = []; 
foreach ($products as $p): 
    $tree[$p['category']][$p['group']][] = $p; 

foreach ($tree as $category => $groups): 
    foreach ($groups as $group => $products): 
     foreach ($products as $p): 
      ... 

使用JOIN例えば、一度にデータをフェッチします次のようなもの：

SELECT p.name as product, g.name as group, c.name as category 
    FROM product p 
    JOIN group_product g ON p.group_product = g.id 
    JOIN category_master c ON g.category = c.id;