capturing form text field value from an included file

[filch]

How does one get the value from a text input element on a dynamic form built from an included file to a script in the calling page? I have tried the $_POST method and although it does grab the original value from the text input field, if I change that value like you might want to do on a shopping cart for instance, it does not get that value.

Below is part of my code on the calling page that is supposed to save the quantity change to the session var 'cart':

if($_POST['save'])
  { 
  echo "<font color = \"#FFFFFF\">the cart has been changed and saved.</font><br>";
  var_dump($_SESSION['cart']);
  echo "<br>";
    foreach ($_SESSION['cart'] as $itemSku => $qty)
    {
	echo "<font color = \"#FFFFFF\" size = 1>The quantity of $itemSku is $qty</font><br>";
	echo "<font color = \"#FFFFFF\" size = 1>form value is " . $_POST['quantity'] . "</font><br>";
      if($_POST['quantity']=="0")
        unset($_SESSION['cart'][$itemSku]);
      else 
        $_SESSION['cart'][$itemSku] = $_POST['quantity'];
    } 
    $total_price = calculate_price($_SESSION['cart']);
    $items = calculate_items($_SESSION['cart']);
  }

Then below is the form code from the include file:

function display_cart($cart, $change = true, $images = 0)
{
  // display items in shopping cart
  // optionally allow changes (true or false)
  // optionally include images (1 - yes, 0 - no)

  //global $items;
  //global $total_price;

  echo "<table border = 0 width = 100% cellspacing = 0>
        <form action = cart.php method = post>
        <tr class=\"tbleHdr\"><th align=left colspan = ". (1+$images) .">Item</th>
        <th>Price</th><th>Quantity</th>
        <th>Total</th></tr>";

  //display each item as a table row
  foreach ($_SESSION['cart'] as $itemSku => $qty)
  {
    $items = get_item_details($itemSku);
    echo "<tr>";
    if($images ==true)
    {
      echo "<td align = left>";
      if (file_exists("images/$itemSku.jpg"))
      {
         $size = GetImageSize("images/".$itemSku.".jpg");  

         if($size[0]>0 && $size[1]>0)
         {
           echo "<img src=\"images/".$itemSku.".jpg\" border=0 ";
           echo "width = ". $size[0]/3 ." height = " .$size[1]/3 . ">";
         }
      }
      else
         echo "&nbsp;";
      echo "</td>";
    }
    echo "<td class=\"record\" align = left>";
    echo "<a href = \"order_a.php?itemSku=".$itemSku."\">".$items["itemName"];
    echo "</td><td class=\"record\" align = center>$".number_format($items["itemPrice"], 2);
    echo "</td><td class=\"record\" align = center>";
    // if we allow changes, quantities are in text boxes
    if ($change == true)
      echo "<input type = text class=\"record\" name = \"quantity\" value = $qty size = 3>";
    else
      echo $qty;
    echo "</td><td class=\"record\" align = center>$".number_format($items["itemPrice"]*$qty,2)."</td></tr>\n";
  }
  // display total row
  echo "<tr class=\"tbleHdr\">
          <th class=\"tbleHdr\" colspan = ". (2+$images) .">&nbsp;</th> 
          <th class=\"tbleHdr\" align = center>" . $_SESSION['items'] . "
          </th>
          <th class=\"tbleHdr\" align = center>
              \$".number_format($_SESSION['total_price'], 2).
          "</th>
        </tr>";
  // display save change button
  if($change == true)
  {
    $target = "index.php";
    echo "<tr>
            <td align = center>" ?>
<?php display_button("NULL", $target, "continue-shopping", "Continue Shopping"); 
<?php echo "</td>
			<td align = center>" ?>
<?php $path = $_SERVER['PHP_SELF'];
  //echo "$path";
  $path = str_replace("cart.php", "", $path);
  display_button("NULL", "https://".$_SERVER['SERVER_NAME'].$path."checkout.php", "go-to-checkout", "Go To Checkout"); ?>
<?php echo "
            <td align = center>
              <input type = hidden name = save value = true>  

              <input type = image src = \"assets/images/save-changes.gif\" 
                     border = 0 alt = \"Save Changes\">
            </td>
            <td>&nbsp;</td>
        </tr>";
  }
  echo "</form></table>";
}

Please help if you can. I really need to solve this for my sanity sake.

Cheers

D

[filch]

OK .. in case anyone is listening .. ;-)

Here is what I have found out so far from troubleshooting:

My session var 'cart' is an associative array and when I add my first product to my cart, it works fine and the key = my itemSku number and its value key is an integer. int(1) for instance. If I then make a change, either set the quantity to 0 (item is unset from session var) or add to the quantity, as long as there is only one item in the cart, it works. One thing though is that now the quantity value is no longer an integer but rather a text string ... which I do not think is a good thing. If I add more items to the cart and then change the quantity, it sets all the items to whatever I changed the quantity to and all the quantity values are now strings.

Hummmmm

D