如何從foreach循環獲取數組索引

Question

如何從foreach循環獲取數組索引，我使用session來打印購物車數據，我需要在代碼列之前打印索引，如1，2，3，4表

<?php 
if(isset($_SESSION["products"])) 
{ 
    $total = 0; 
    echo '<tbody>'; 
    foreach ($_SESSION["products"] as $cart_itm) 
    { 
     echo '<tr>'; 
     echo '<td>?</td>'; 
     echo '<td>'.$cart_itm["code"].'</td>'; 
     echo '<td>'.$cart_itm["name"].'</td>'; 
     echo '<td>'.$cart_itm["qty"].'</td>'; 
     echo '<td><input type="text" name="product_qty_desired" class="spinner" value="1" size="3" /></td>'; 
     echo '<td>'.$currency.$cart_itm["price"].'</td>'; 
     echo '<td class="subtotal">Subtotal : </td>'; 
     echo '<td><span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">&times;</a></span></td>';  
     echo '</tr>'; 
     $subtotal = ($cart_itm["price"]*$cart_itm["qty"]); 
     $total = ($total + $subtotal); 
    } 
    echo '<tr>'; 
    echo '<td></td>'; 
    echo '<td></td>'; 
    echo '<td>Total QTY :</td>'; 
    echo '<td></td>'; 
    echo '<td>?</td>'; 
    echo '<td>Total</td>'; 
    echo '<td>'.$currency.$total.'</td>'; 
    echo '<td></td>'; 
    echo '</tr>'; 

    echo '</tbody>'; 
}else{ 
    echo 'Your Cart is empty'; 
} 
?> 

http://i62.tinypic.com/2qaifrt.png

感謝

熱烈

Answer 1

foreach ($_SESSION["products"] as $index => $cart_itm) 

{ 
     echo '<tr>'; 
     echo '<td>' . $index . '</td>'; 
     echo '<td>'.$cart_itm["code"].'</td>'; 
     echo '<td>'.$cart_itm["name"].'</td>'; 
     echo '<td>'.$cart_itm["qty"].'</td>'; 
     echo '<td><input type="text" name="product_qty_desired" class="spinner" value="1" size="3" /></td>'; 
     echo '<td>'.$currency.$cart_itm["price"].'</td>'; 
     echo '<td class="subtotal">Subtotal : </td>'; 
     echo '<td><span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">&times;</a></span></td>';  
     echo '</tr>'; 
     $subtotal = ($cart_itm["price"]*$cart_itm["qty"]); 
     $total = ($total + $subtotal); 
    } 

使用箭頭運算符，您可以在foreach循環中選擇索引。