SQL插入多行，foreach

Question

我試圖將insert多個rows插入到我的數據庫中，依賴於數組返回的迭代次數。

插入正在工作，但是插入多於一行，無論數組中有什麼。

function createOrder(){ 

    $CustomerID = $_SESSION['CustomerID']; 
    $BasketID = $_SESSION['BasketID']; 

    // create a new entry with an OrderID 
    $orders = new Basket; 
    $orders->storeFormValues($_POST); 
    // Collect the OrderID returned from insertOrder(); and insert into 'Orders' 
    $OrderID = $orders->insertOrder($CustomerID); 

    // Populate OrderDetails with items in users Basket. 
    $data = Basket::getBasket($BasketID); 
    $results['basket'] = $data['results']; 

    // Insert the order details into the orderDetails DB. 
    $orders->insertOrderDetails($OrderID, $BasketID, $CustomerID, $results); 
}; 

和環路：

public static function insertOrderDetails($OrderID, $BasketID, $CustomerID, $results){ 
    $conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD); 

    // for each row insert into the DB 
    foreach ($results['basket'] as $row) { 
     $sql = "INSERT INTO OrderProducts (OrderID, ProductName, Price, Quantity) 
       VALUES (:OrderID, :ProductName, :Price, :Quantity)"; 

     $st = $conn->prepare($sql); 
     $st->bindValue(":OrderID", $OrderID, PDO::PARAM_INT); 
     $st->bindValue(":ProductName", $row->ProductName, PDO::PARAM_STR); 
     $st->bindValue(":Price", $row->Price, PDO::PARAM_INT); 
     $st->bindValue(":Quantity", $row->Quantity, PDO::PARAM_STR); 
     $st->execute(); 

    } 
    $conn = null; 
} 

和陣列，$results看起來像;

array(1) { 
    ["basket"]=> 
    array(2) { 
    [0]=> 
    object(Basket)#3 (10) { 
     ["OrderID"]=> 
     NULL 
     ["CustomerID"]=> 
     NULL 
     ["OrderItemID"]=> 
     NULL 
     ["ProductID"]=> 
     string(1) "9" 
     ["Quantity"]=> 
     string(1) "4" 
     ["ProductName"]=> 
     string(12) "Cheese Bagel" 
     ["Price"]=> 
     string(1) "1" 
     ["NameType"]=> 
     string(5) "Bagel" 
     ["BasketProductID"]=> 
     string(2) "25" 
     ["BasketID"]=> 
     string(1) "3" 
    } 
    [1]=> 
    object(Basket)#5 (10) { 
     ["OrderID"]=> 
     NULL 
     ["CustomerID"]=> 
     NULL 
     ["OrderItemID"]=> 
     NULL 
     ["ProductID"]=> 
     string(1) "2" 
     ["Quantity"]=> 
     string(1) "1" 
     ["ProductName"]=> 
     string(15) "The British BLT" 
     ["Price"]=> 
     string(1) "3" 
     ["NameType"]=> 
     string(5) "Bagel" 
     ["BasketProductID"]=> 
     string(2) "26" 
     ["BasketID"]=> 
     string(1) "3" 
    } 
    } 
} 

任何建議大大apprecaited！

Answer 1

我在數據庫中的主鍵wasnt沒有設置爲Auto Increment。改變這個解決了這個問題。將允許刪除一次。感謝您的幫助

Answer 2

閱讀http://php.net/manual/en/pdostatement.execute.php看來你可能需要關閉遊標才能執行下一條語句。

注： 注： 有些司機需要在執行下一條語句之前關閉遊標。

另一個說明你可能不必在每次迭代中創建語句。

Answer 3

可能只是試試這個變種的INSERT查詢：

insert into tablename (id,blabla) values(1,'werwer'),(2,'wqewqe'),(3,'qwewe'); 

例如：

$conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD); 

foreach ($results['basket'] as $key => $row) { 
    $sql = "INSERT INTO OrderProducts (OrderID, ProductName, Price, Quantity) VALUES "; 
    $sql .= "(:OrderID" . $key . ", :ProductName" . $key . ", :Price" . $key . ", :Quantity" . $key . "),"; 
} 

$sql = substr($sql, 0, -1); 
$st = $conn->prepare($sql); 

foreach ($results['basket'] as $key => $row) { 
    $st->bindValue(":OrderID" . $key, $OrderID, PDO::PARAM_INT); 
    $st->bindValue(":ProductName" . $key, $row->ProductName, PDO::PARAM_STR); 
    $st->bindValue(":Price" . $key, $row->Price, PDO::PARAM_INT); 
    $st->bindValue(":Quantity" . $key, $row->Quantity, PDO::PARAM_STR); 
} 
$st->execute(); 

兩個的foreach但一個插入查詢數據庫。