php - SQL插入多行，foreach

Question

我正在尝试将多个行插入到我的数据库中，具体取决于返回的数组迭代次数。

插入工作正常，但插入的行数不超过 1 行，无论数组中有什么。

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); 
};

和循环:

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;
}

数组 $results 看起来像；

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"
    }
  }
}

非常感谢任何建议!

Answer 1

我在数据库中的主键未设置为自动增量。改变这个就解决了这个问题。一旦允许就会删除。感谢您的帮助