MercadoPago PHP数量错误

Question

我正在使用PHP模块MercadoPago。这是我的代码：

$mp = new MP("CLIENT_ID", "CLIENT_SCRET");  

foreach ($_SESSION["carrito"] as $value){
    $itemCode  = $value['tagme']; 
    $itemDesc  = get_pedido($itemCode);        
    $itemQty   = $value['cant'];  // it comes from $_POST['cant']       
    $unitPrice = $value['unit_price'];

    $items[] = array(
        "title" => $itemDesc,       
        "quantity" => $itemQty,
        "currency_id" => "ARS",
        "unit_price" => $unitPrice
    ); 
}

$preference = array(
    "items" => $items,
    "payer" => array(
        'name'  => $name,
        'email' => $email
    ),
    "back_urls" => array(
        'success' => 'http://example.com/success.php',
        'pending' => 'http://example.com/pending.php'
    )
);
echo '<pre>';print_r($items); echo '</pre>';
$mp->sandbox_mode(TRUE);
$preferenceResult = $mp->create_preference($preference);

$items输出如下：

Array
(
    [0] => Array
        (
            [title] => Test Product
            [quantity] => 1
            [currency_id] => ARS
            [unit_price] => 36
        )

    [1] => Array
        (
            [title] => Shipping Cost
            [quantity] => 1
            [currency_id] => ARS
            [unit_price] => 42
        )

)

但我得到了以下错误：

致命错误:在/home/..../public_html/mercadopago-sdk/mercadopago.php:227堆栈跟踪：#0 /home/..../public_html/mercadopago-sdk/mercadopago.php(240)：MPRestClient::exec('POST'，‘//prefe.’，数组，‘’application/jso.‘) #1 /home/..../public_html/mercadopago-sdk/mercadopago.php(126)：MPRestClient：：post(’/checkout/prefe.‘，Array) #2 /home/./public_html/concerm.php(140)：MP->create_prefe #3 {main} {main}抛入第227行的/home/..../public_html/mercadopago-sdk/mercadopago.php中

有什么想法吗？

Answer 1

我通过将数量输入到INT来解决这个问题。

foreach ($_SESSION["carrito"] as $value){
    $itemCode  = $value['tagme']; 
    $itemDesc  = get_pedido($itemCode);        
    $itemQty   = $value['cant'];  // it comes from $_POST['cant']       
    $unitPrice = $value['unit_price'];

    $items[] = array(
        "title" => $itemDesc,       
        "quantity" => intval($itemQty), // this solved the error        
        "currency_id" => "ARS",
        "unit_price" => $unitPrice
    ); 
}

我的数量似乎是字符串，它来自于会话中的隐藏和存储：

<input type="hidden" name="cant" value="1" />

但是，MercadoPago API需要该字段中的整数。所以，我不得不使用intval()。