將項目添加到購物車后如何增加會話ID變量

Question

我正在使用一個購物車項目，用戶可以在購物車中添加多個項目並從購物車中刪除該項目，添加一個項目后我正在使用會話，每個添加新項目的ID都是一個一個遞增ID，代碼可以正常工作當我嘗試從項目托盤中刪除項目時，刪除中的唯一問題是僅刪除一項是我的代碼

<?php
session_start();
if(!empty($_GET["action"])) {
switch($_GET["action"]) {
   case "add":
   if(!isset($_SESSION['cart'])) {
           $item_id_session = 1;
           $_SESSION['cart'] = array();

    }
    else
        {
            $count = count($_SESSION['cart']); 
            $item_id_session = $count++;
        }

            $item = array();
            $item['item_id_session']= $item_id_session ;
            $item['title']=$_REQUEST['title'];
            $item['length_m']  =$_REQUEST['length_m'];
            $item['length_md']=$_REQUEST['length_md'];
            $item['length_cm'] =$_REQUEST['length_cm'];
            $item['length_cmd']=$_REQUEST['length_cmd'];
            $item['width_m']=$_REQUEST['width_m'];
            $item['width_md']=$_REQUEST['width_md'];
            $item['width_cm']=$_REQUEST['width_cm'];
            $item['width_cmd']=$_REQUEST['width_cmd'];
            $item['height_m']=$_REQUEST['height_m'];
            $item['height_md']=$_REQUEST['height_md'];
            $item['height_cm']=$_REQUEST['height_cm'];
            $item['height_cmd']=$_REQUEST['height_cmd'];
            $item['weight']=$_REQUEST['weight'];
            $item['weightd']=$_REQUEST['weightd'];
            $item['quantity']=$_REQUEST['quantity'];
            $item['image']=$_FILES["image"]["name"];
            $target_dir = "profile_images/";
            $item['image']= "profile_images/" . $_FILES["image"]["name"];
            $imageFileType = pathinfo($item['image'],PATHINFO_EXTENSION);
            $check = getimagesize($_FILES["image"]["tmp_name"]);
         if($check !== false) {
         echo "File is an image - " . $check["mime"] . ".";
        //$uploadOk = 1;
         move_uploaded_file($_FILES["image"]["tmp_name"], $item['image']);
         echo "The file ". basename( $_FILES["image"]["name"]). " has been uploaded.";
         }
           $_SESSION['cart'][] = $item;
   break;
   case "remove":
     if(!empty($_SESSION["cart"])) {
      foreach($_SESSION["cart"] as $k => $v) {
          if($_GET['item_id_session'] == $k)
            unset($_SESSION["cart"][$k]); 
            unset($_SESSION['cart'][$item_id_session]);      
          if(empty($_SESSION["cart"]))
            unset($_SESSION["cart"]);

      }
    }

   break;
     }
}
?>

這是我的刪除按鈕代碼

    <a href="step3.php?action=remove&id=<?php echo $item["item_id_session"];?>"class="product-title">
    <span class="glyphicon glyphicon-trash pull-right"></span>
    </a>

Answer 1

試試這個。在將商品添加到購物$item_id_session ，您需要使用$item_id_session作為密鑰。

 case "add":
    if (isset($_SESSION['cart']) && count($_SESSION['cart']) > 0) {
        $count = count($_SESSION['cart']);
        $item_id_session = $count+ 1;
    } else {

        $item_id_session = 1;
        $_SESSION['cart'] = array();
    }

                    $item = array();
                    $item['item_id_session']= $item_id_session ;
                    $item['title']=$_REQUEST['title'];
                    $item['length_m']  =$_REQUEST['length_m'];
                    $item['length_md']=$_REQUEST['length_md'];
                    $item['length_cm'] =$_REQUEST['length_cm'];
                    $item['length_cmd']=$_REQUEST['length_cmd'];
                    $item['width_m']=$_REQUEST['width_m'];
                    $item['width_md']=$_REQUEST['width_md'];
                    $item['width_cm']=$_REQUEST['width_cm'];
                    $item['width_cmd']=$_REQUEST['width_cmd'];
                    $item['height_m']=$_REQUEST['height_m'];
                    $item['height_md']=$_REQUEST['height_md'];
                    $item['height_cm']=$_REQUEST['height_cm'];
                    $item['height_cmd']=$_REQUEST['height_cmd'];
                    $item['weight']=$_REQUEST['weight'];
                    $item['weightd']=$_REQUEST['weightd'];
                    $item['quantity']=$_REQUEST['quantity'];
                    $item['image']=$_FILES["image"]["name"];
                    $target_dir = "profile_images/";
                    $item['image']= "profile_images/" . $_FILES["image"]["name"];
                    $imageFileType = pathinfo($item['image'],PATHINFO_EXTENSION);
                    $check = getimagesize($_FILES["image"]["tmp_name"]);
                 if($check !== false) {
                 echo "File is an image - " . $check["mime"] . ".";
                //$uploadOk = 1;
                 move_uploaded_file($_FILES["image"]["tmp_name"], $item['image']);
                 echo "The file ". basename( $_FILES["image"]["name"]). " has been uploaded.";
                 }
                   $_SESSION['cart'][$item_id_session] = $item;
           break;
           case "remove":
             if(!empty($_SESSION["cart"])) {
              foreach($_SESSION["cart"] as $k => $v) {
                  if($_GET['item_id_session'] == $k)
                    unset($_SESSION["cart"][$k]); 
              }
            }

           break;