PHP Shopping cart coding problem

[Nixak]

Hi, I have some code that should send the details of the shopping cart to sagepay/protx when an order is made, but I have found that when it is enabled you are unable to confirm the order as the button dissappers and so does the secruity cert for the site.

 

It kind of acts like the coding stops the footer from working. If anyone can look at the code and find the problem it would be a great help.

 

function getShoppingCartInfo()
    {
        global $cart, $order;

   		$retStr = "";

        if (MODULE_PAYMENT_PROTX_SHOPCART == 'true') {
	$shipping = $order->info['shipping_cost'];
	$shipping = number_format($shipping, 2, '.', '');
		$products = $cart->get_products();
	$no_lines = sizeof($products);
	$no_lines = $no_lines + 1;

	$shippingStr .= ":Shipping:1:".$shipping.":----:".$shipping.":".$shipping;
	$basketStr = "Basket=".$no_lines;
	$moreStr .= ":More products...See Order.:1:----:----:----:----";
        $moreLen = strlen( $moreStr );
	/*
	      Maxmium size of the basket field according to SAGEPAY Form Documentation V2.22
	      is 7500 characters. Allowing 7495 as a small safety net.
	*/
	$charCount = 7495 - strlen( $shippingStr ) - strlen( $basketStr );

	$detail = "";
        $linesAdded = 0;
        $i = 0;
        $n=sizeof($products);
        $finished = false;

    	while ( ( $i<$n ) && ( !$finished ) ) {
   				$desc = $products[$i]['name'];
			$desc  = str_replace(":", "", $desc);
			$qty = $products[$i]['quantity'];
			$price = $products[$i]['price'] + $cart->attributes_price($products[$i]['id']);
			$tax = $price/100 * zen_get_tax_rate($products[$i]['tax_class_id']);
			$tax = number_format($tax, 2, '.', '');
			$finalPrice = $price + $tax;
			$finalPrice = number_format($finalPrice, 2, '.', '');
			$lineTotal = $qty * $finalPrice;
			$lineTotal = number_format($lineTotal, 2, '.', '');
			$line = ":".$desc.":".$qty.":".$price.":".$tax.":".$finalPrice.":".$lineTotal;
			$line = str_replace("\n", "", $line);
	        $line = str_replace("\r", "", $line);
	        $len = strlen( $line );
	        if ( ( $charCount - $moreLen - $len) > 0 ) {
	            $linesAdded ++;
	            $charCount -= $len;
	            $detail .= $line;
	        } else if ( $charCount - $moreLen > 0 ) {
	            $detail .= $moreStr;
	            $charCount -= $len;
	            $linesAdded ++;
	            $finished = true;
	        }
	        else {
	            // We should not hit this point, but if we do lets fininsh
	            $finished = true;
	        }
	        $i++;
   		}

   		if ( strlen( $detail ) > 0 )
   		{
   		    $linesAdded ++;
   		    $retStr = "&" . "Basket=" . $linesAdded . $detail . $shippingStr;
   		}
      }
      return $retStr;
    }