如何在PHP中使用while循環列出相同的id數據？

Question

我有一個MySQL表。列這樣的

series_id, series_color, product_name 

我應該列出相同的series_id product像組。

我想這樣的列表中的所有相同saries_id通過series_id迴響在我的屏幕一樣，

A12 Series Product 

- Milk 
- Tea 
- sugar 
- water 

B12 Series Product 

- Water 
- Banana 
- Cofee 
- Tea 

Answer 1

令你的結果，因此，所有具有相同價值的產品會在一起。

$stmt = $pdo->prepare("SELECT series_id, product_name 
         FROM yourTable 
         ORDER BY series_id"); 
$stmt->execute(); 

然後顯示結果時，顯示的系列頭部並開始新的<ul>只要稍有改變：

$last_series = null; 
echo "<ul>\n"; 
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) { 
    if ($row['series_id'] != $last_series) { 
     if ($last_series) { 
      echo "</ul></li>\n"; 
     } 
     echo "<li>" . $row['series_id'] . " Series Product\n"; 
     echo "<ul>\n"; 
     $last_series = $row['series_id']; 
    } 
    echo "<li>" . $row['product_name'] . "</li>\n"; 
} 
if ($last_series) { 
    echo "</li>\n"; 
} 
echo "</ul>\n";