Question

我是php的初学者，如果您觉得这个问题有点奇怪，请道歉。

我正在尝试检查我POST并存储在会话数组中的2个变量。 2个变量是购物车中商品的尺寸和颜色。

如何检查会话数组中是否已存在这两个变量。如果是这种情况我只想增加数量。事实上，我认为我只是缺少编写我的if语句来检查这种情况。这是代码：

   if (isset($_POST['ID']) && isset($_POST['SIZE']) && isset($_POST['COLOR'])) {

    $product = $_POST['ID'];
    $size = $_POST['SIZE'];
    $color = $_POST['COLOR'];

  $Found = false;
  $i = 0;
  // If the cart session variable is not set or cart array is empty
  if (!isset($_SESSION["myArray"]) || count($_SESSION["myArray"]) < 1) {
      // RUN IF THE CART IS EMPTY OR NOT SET
    $_SESSION["myArray"] = array(0 => array("productID" => $product, "quantity" => 1, "size"=> $size, "color" => $color));
  } else {
    // RUN IF THE CART HAS AT LEAST ONE ITEM IN IT
    foreach ($_SESSION["myArray"] as $each_item) {
          $i++;
          while (list($key, $value) = each($each_item))
          {
            if (($key == "productID" && $value == $product))//<- IT'S PROBABLY WHERE I SHOULD CHECK THEM BUT HOW????
            {
              // That item is in cart already so let's adjust its quantity using array_splice()
              array_splice($_SESSION["myArray"], $i-1, 1, array(array("productID" => $product, "quantity" => $each_item['quantity'] + 1, "size"=> $size, "color" => $color)));
              $wasFound = true;
            } // close if condition
          } // close while loop
    } // close foreach loop
       if ($Found == false) {
         array_push($_SESSION["myArray"], array("productID" => $product, "quantity" => 1, "size"=> $size, "color" => $color));
       }
  }
}

提前感谢您的帮助。

Answer 1

您需要列出数组的键和值吗？

 foreach ($_SESSION["myArray"] as $key=>$each_item) {

如何检查我的这两个变量是否已经存在会话数组。

if(array_key_exist('color',$_SESSION["myArray"]))

Answer 2

我想你需要更轻松的东西（在我看来，myArray似乎是个坏名字）：

$product_id = $_POST['ID']; //You should sanitize this input!
if(array_key_exist($product_id,$_SESSION["myCart"])) {
    $_SESSION["myCart"][$product_id]['quantity']++;
} else {
    $size = $_POST['SIZE']; //Sanitize this input as well
    $color = $_POST['color'];
    $_SESSION["myCart"][$product_id] = array(
        'size' => $size,
        'color' => $color,
        'quantity' => 1,
    );
}

希望有所帮助：）

php列出数组的每个键和值

2 个答案: