与本地主机相比，PHP数组初始化在Live网站上不起作用

• 问题是当FTP推送时，来自本地主机的结果与实时站点不匹配。这个下面的代码似乎让我相信数组没有被创建正确安装在服务器上。此外，它正在做一些时髦的事情，如下所示。第97行的错误为"无法将标量值用作数组"，或$_SESSION["count"][$i]+=1。你明白原因了吗？还是我犯了另一个错误？

• 总结一下代码，以下会话数组构成了购物车的核心：$_session['item_id'][$i]，$_session['size'][$i]，$_SESSION['price'][$i]，$_SESSION['count'][$i]。。。并且它们都相互关联。因此，检查组合是否存在，如果存在，则附加计数，如果不存在，则首次添加项目组合。

本地主机

In Stock: 3
Distinct Item Count: 3
Array ( [0] => 1 [1] => 2 [2] => 2 ) Item Array: 1
Array ( [0] => S [1] => M [2] => L ) Size Array: 1
Array ( [0] => 15 [1] => 20 [2] => 20 ) Price Array: 1
Array ( [0] => 15 [1] => 35 [2] => 17 ) Count Array: 1
Quantity Increased to 18 
1 
S 
15
15

2 
M 
20
35

2 
L 
20 
18 
|3 ($1285) 

Live网站-首次添加

In Stock: 5
0

1
M
20
1
|1 ($20)

Live网站-第二次添加

In Stock: 5
Distinct Item Count: 1
1Item Array: 1
MSize Array: 1
300Price Array: 1
1Count Array: 1

Warning: Cannot use a scalar value as an array in /public_html/shop/helper/addtocart.php on line 97
Quantity Increased To
1
M
2

|1 ($0)  

代码

    if (isset($_SESSION["item_id"]) && is_array($_SESSION["item_id"])){
        echo "Distinct Item Count: " . count($_SESSION["item_id"]);
        echo "<br/>";
        echo "<br/>";
        echo "Item Array: ";
        print_r($_SESSION["item_id"]);
        echo "<br/>";
        echo "Size Array: ";
        print_r($_SESSION["size"]);
        echo "<br/>";
        echo "Price Array: ";
        print_r($_SESSION["price"]);
        echo "<br/>";
        echo "Count Array: ";
        print_r($_SESSION["count"]);
        echo "<br/>";
        echo "<br/>";
    }
    //check for current product combination in visitor's shopping cart content
    //find count in cart
    if (!isset($_SESSION["item_id"])){
      $count = 0;
      }else{
        $count = count($_SESSION["item_id"]);
      }
    echo $count;
    echo "<br/>";
    if ($count == 0){
        //declare arrays
        $_SESSION["item_id"] = array();
        $_SESSION["size"] = array();
        $_SESSION["price"] = array();
        $_SESSION["count"] = array();
        $_SESSION["total"] = array();
        //add first item to cart
        $_SESSION["item_id"][] = $item_id;
        $_SESSION["size"][] = $size;
        $_SESSION["price"][] = $price;
          //fundraiser and corporate
          if (($_SESSION["acctype"] == 2 || $_SESSION["acctype"] == 3) && isset($_SESSION['userid'])){
              //update count, add 100
              $_SESSION["count"][] = 100;
              }
          else{
              $_SESSION["count"][] = 1;
          }
    }else{
        $flag=0;
        $i=0;
        while ($i <= $count){
           if( ($_SESSION["item_id"][$i] == $item_id) && ($_SESSION["size"][$i] == $size) ){
           //fundraiser and corporate
              if(!isset($_SESSION["acctype"]) || $_SESSION["acctype"] == 1){
                 //update by one
                  $_SESSION["count"][$i] +=1;
                }
              elseif(isset($_SESSION['userid']) && ($_SESSION["acctype"] == 2 || $_SESSION["acctype"] == 3)){
                    //update count, add 100
                    $_SESSION["count"][$i] +=100;
                }
              else{
                  echo "Hmm";
                }
              //update cart stats
              echo notify('Quantity Increased To' . ' ' . $_SESSION["count"][$i]);
              //was there combination match?
              $flag = 1;
              }
        $i++;
        }
        if($flag == 0){
                  $_SESSION["item_id"][] = $item_id;
                  $_SESSION["size"][] = $size;
                  $_SESSION["price"][] = $price;
                    //fundraiser and corporate
                    if (($_SESSION["acctype"] == 2 || $_SESSION["acctype"] == 3) && isset($_SESSION['userid'])){
                        //update count, add 100
                        $_SESSION["count"][] = 100;
                    }else{
                    $_SESSION["count"][] = 1;
                    }
         }
    }