在窗體輸入中回顯php充當路徑按鈕

Question

我創建了一個購物車按鈕，並在我的購物車頁面中顯示了一個總計數量，我將其回顯出來。我希望echo'd值位於我的購物車按鈕中，但是當我試圖將回顯添加到該值時，它不起作用。是否有另一種方式來構建這個來獲得我的url圖像，價值：購物車和顯示的echo'd數量？

我的購物車按鈕：

<form class="shopcart" id="block right" action="shoppingcart.php"> 
    <input type="submit" class="shopcart" name="shopcart" value="Shopping Cart <?php echo $totalquantity; ?> "> 
</form> 

總量計數：

<?php 
     } 

//Shopping Cart Quantity Count 
if(isset($_SESSION['shopping_cart']) && is_array($_SESSION['shopping_cart'])) { 
     $totalquantity = 0; 
     foreach($_SESSION['shopping_cart'] AS $product) { 
      $totalquantity = $totalquantity + $product['quantity']; 
     } 
    } 
    else { 
     $totalquantity = 0; 
    } 
    echo $totalquantity; 
?> 

CSS：

/*----Add to cart Button-------*/ 

input.shopcart { 
background-image: url(images/cart24.png); 
background-color: transparent; 
background-repeat: no-repeat; 
background-position: 2px 5px 2px 5px; 
vertical-align: middle; 
width: 180px; 
padding: 8px; 
border-radius: 5px; 
border: 1px solid #7ac9b7; 
background-color: #12BDB8; 
color: #F0F8FF; 
font-weight: bold; 
font-size: 15px; 
cursor: pointer; 
float: right; 
text-align: center; 
margin: 0px auto; 
margin-top: -45px; 
} 
.shopcart:hover { 
    background-color: #10A8A3; 
} 

爲T這裏有更好的方法來完成這項工作？我在每個頁面上都有這個購物車按鈕，並且想要使用它，以便用戶在哪裏可以看到購物車中的物品數量。

快速端問題。我無法將我的購物車圖像設置爲位於左上角的我的網址背景。無論我如何處理背景定位，它都停留在那裏。任何人都看到我在做什麼錯了嗎？

***編輯，以顯示總量的位置可變

    <form class="shopcart" id="block right" 

action="shoppingcart.php"> 
         <input type="submit" class="shopcart" name="shopcart" value="Shopping Cart"> 
        </form> 
       </div> 
      </div> 
     </div> 

     <div class="whitepageOut"> 
      <div class="whitepage"> 
       <div class="content"> 
        <h1>Shopping Cart</h1> 
       <!-- Add in additional info. I made the above up, to test. Correct when ready! --> 
         <div class="floatright"> 
<?php   
      echo "<p> 
      <a href='./shoppingcart.php?empty_cart=1'>Empty Cart</a> 
      </p>"; 
?> 
         </div> 
<?php 
// Initialize cart 
if(!isset($_SESSION['shopping_cart'])) { 
    $_SESSION['shopping_cart'] = array(); 
} 
// Update Cart 
if(isset($_POST['update_cart'])) { 
    $quantities = $_POST['quantity']; 
    foreach($quantities as $id => $quantity) { 
     if(!isset($products[$id])) { 
      $message = "Invalid product!"; 
      break; 
     } 
     $_SESSION['shopping_cart'][$id]['quantity'] = $quantity; 
    } 
    if(!$message) { 
     $message = "Cart updated!<br />"; 
    } 
} 

// Empty cart 
if(isset($_GET['empty_cart'])) { 
    $_SESSION['shopping_cart'] = array(); 
} 
      if(empty($_SESSION['shopping_cart'])){ 
       echo "Your cart is empty<br />"; 
      } 
      else { 
     echo $message; 
?> 
         <form action='./shoppingcart.php?view_cart=1' method='POST'> 
          <table class="carttable"> 
           <tr> 
            <th class="cartth">Name</th> 
            <th class="cartth">Price</th> 
            <th class="cartth">Category</th> 
            <th class="cartth">Quantity</th> 
           </tr> 
<?php        
         $base_price = 0; 
         foreach($_SESSION['shopping_cart'] as $id => $product) { 
            $product_id = $product['product_id']; 
            $base_price += $products[$product_id]['price'] * $product['quantity']; 
            $shipping_price += $products[$product_id]['shippingprice'] * $product['quantity']; 
?> 
           <tr> 
             <td class="carttd"><?php echo "<a href='./viewProduct.php?view_product=$id'>" . $product['name'];?><?php echo $products[$product_id]['name']; ?> </a> 
             </td> 
             <td class="carttd"><?php echo '$' . $products[$product_id]['price']; ?></td> 
             <td class="carttd"><?php echo $products[$product_id]['category']; ?></td> 
             <td class="carttd"> 
             <?php echo "<input type='text' name='quantity[$product_id]' value='" . $product['quantity'] . "' />"; ?> </td>           
           </tr> 
<?php 
           } 
           //Calculates total 
           $total_price += $base_price + $shipping_price; 
?> 
           <tr> 
            <td colspan="2"></td> 
            <td class="tdcarttotal">Subtotal</td> 
            <td class="tdcarttotal"><?php echo "$" . $base_price; ?> </td> 
           </tr> 
           <tr> 
            <td colspan="2"></td> 
            <td class="tdcarttotal">Tax</td> 
            <td class="tdcarttotal">To be determined</td> 
           </tr> 
           <tr> 
            <td colspan="2"></td> 
            <td class="tdcarttotal">Shipping Price</td> 
            <td class="tdcarttotal"><?php echo "$" . $shipping_price; ?></td> 
           </tr> 
           <tr> 
            <td colspan="2"></td> 
            <td class="tdcarttotal">Total</td> 
            <td class="tdcarttotal"><?php echo "$" . $total_price; ?></td> 
           </tr> 
          </table> 
           <input type='submit' id='button' name='update_cart' value='Update Cart'> 
         </form> 
       <form action="checkout.php?checkout=1"> 
        <input type="submit" class="checkoutbutton" value="Proceed to Checkout"> 
       </form><br><br><br><br><br> 
<?php 
      } 
//Shopping Cart Quantity Count 

     if(isset($_SESSION['shopping_cart']) && is_array($_SESSION['shopping_cart'])) { 
     $totalquantity = 0; 
     foreach($_SESSION['shopping_cart'] AS $product) { 
      $totalquantity = $totalquantity + $product['quantity']; 
     } 
    } 
    else { 
     $totalquantity = 0; 
    } 
    echo $totalquantity; 
?> 

Answer 1

沒有顯示更多的代碼，我的猜測是，你正在試圖展示按鈕之前實際上爲變量賦值。

編輯：

添加JavaScript來更新提交按鈕的值：

變化<input type="submit" class="shopcart" name="shopcart" value="Shopping Cart">到<input type="submit" class="shopcart" name="shopcart" id="shopcart" value="Shopping Cart">。

在你的PHP代碼末尾添加這樣的：

echo "<script>document.getElementById('shopcart').value = 'Shopping Cart $totalquantity';</script>"; 

希望這可以幫助你！