Paypal Checkout

zar786

I have a shopping cart script inplace and working, to show the cart i call the following function:

function showCart() {
	global $db;
	$cart = $_SESSION['cart'];
	if ($cart) {
		$items = explode(',',$cart);
		$contents = array();
		foreach ($items as $item) {
			$contents[$item] = (isset($contents[$item])) ? $contents[$item] + 1 : 1;
		}
		$output[] = '<form action="cart.php?action=update" method="post" dvd_id="cart">';
		$output[] = '<table>';
		$output[] = '<tr>';
			$output[] = '<td><b>Title:&nbsp;&nbsp;</b></td>';
			$output[] = '<td><b>Price:&nbsp;&nbsp;</b></td>';
			$output[] = '<td><b>Quantity:&nbsp;&nbsp;</b></td>';
			$output[] = '<td><b>Overall:&nbsp;&nbsp;</b></td>';
			$output[] = '<td></td>';
			$output[] = '</tr>';
		foreach ($contents as $dvd_id=>$qty) {
			$sql = 'SELECT * FROM dvds WHERE dvd_id = '.$dvd_id;
			$result = $db->query($sql);	
			$row = $result->fetch();
			extract($row);	
			$output[] = '<tr>';		
			$output[] = '<td>'.$title.'&nbsp;&nbsp;</td>';
			$output[] = '<td>&pound;'.$price.'&nbsp;&nbsp;</td>';
			$output[] = '<td><input type="text" name="qty'.$dvd_id.'" value="'.$qty.'" size="2" maxlength="2" />&nbsp;&nbsp;</td>';
			$output[] = '<td>&pound;'.($price * $qty).'&nbsp;&nbsp;</td>';
			$total += $price * $qty;
			$output[] = '<td><a href="cart.php?action=delete&dvd_id='.$dvd_id.'" class="r">Remove</a></td>';
			$output[] = '</tr>';
		}
		$output[] = '</table>';

	$output[] = '<p>Grand total: <strong>&pound;'.$total.'</strong></p>';
	$output[] = '<div><button type="submit">Update cart</button></div>';
	$output[] = '</form>';
} else {
	$output[] = '<p>You shopping cart is empty.</p>';
}
return join('',$output);
}

I want to use a paypal checkout where users can buy the items in the cart, i'm using this form:

form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="image" src="https://www.paypal.com/en_GB/i/btn/btn_cart_SM.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online.">
<img alt="" border="0" src="https://www.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1">
<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="freemanz24@hotmail.com">
<input type="hidden" name="item_name" value="<?php echo $_POST['item']; ?>">
<input type="hidden" name="item_number" value="<?php echo $_SESSION['dvd_id']; ?>">
<input type="hidden" name="amount" value="<?php echo $_POST['price']; ?>">
<input type="hidden" name="no_shipping" value="0">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="GBP">
<input type="hidden" name="lc" value="GB">
<input type="hidden" name="bn" value="PP-ShopCartBF">
</form>]

For the values for item name, number and amount i want it to send the variables across to the paypal cart page, i'm not sure to call these variables correctly which i'm trying to extract from the showcart function.

Could anyone help me with this?

jeremyphphaven

paypal has a dev environment and you can setup a unique sandbox specific to your needs...

You need to do that and test these things out and see what paypal is returning (google paypal dev or something similar to get the link as it's impossible to find on the paypal site alone)

NOTE: about 2 years ago I used paypal alot and stopped using them all together because they changed their environment variables so much that my functionality to paypal broke once every quarter or so. Not sure about anyone else's experience with them.

benracer

Personally i use a shopping cart on my site then have one button that when pressed sends the order contents to me and then another is displayed for paypal, the paypal one contains an order id from the saved order, total and postage.

http://btronics.co.uk/cart

zar786

Yea i want something like on your site benracer. I just need to pass the variables for item_no which is dvd_id and total aswell as the item name

benracer

How experienced in php are you and do you have a site i could look at to see the current setup?

rsmith

I'm glad I stumbled across this topic. I'm looking to do the same thing. I've got my cart done and the e-mail script done. The user can view the order summary, see the order number, etc. When they click checkout I want to pass the order number to PayPal as the item that's being purchased. What's actually getting purchased will print out for the user from my site and then be e-mailed to me so I can reconcile the purchase with the order number.

benracer

I store my order number and total in a session and just echo it as an item in paypays buy it now system....

                

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" style="display:inline" target="_blank" name="form_2">
  <input name="Pay For Order" type="submit" id="Pay For Order" value="Pay For Order"/>
  <input type="hidden" name="cmd" value="_xclick" />
  <input type="hidden" name="business" value="sales@example.co.uk" />
  <input type="hidden" name="item_name" value="My Company :: Order #<?php echo $_SESSION['orderid']; ?> "/>
  <input type="hidden" name="amount" value="<?php echo $_SESSION['total']; ?>" />
  <input type="hidden" name="currency_code" value="GBP" />
  <input type="hidden" name="shipping" value="0.00">//could store postage too
  <input type="hidden" name="no_shipping" value="2">
</form>

zar786

benracer wrote:
How experienced in php are you and do you have a site i could look at to see the current setup?

I know the basics of PHP and yea the site is http://zardvds.890m.com

I still can't pass any session variables to the paypal checkout, i'm not sure were i'm going wrong, maybe it's because i'm calling a function to show the cart and then i need to pass the variables in that function over to the paypal button, any ideas??

benracer

could you post the cart.php script 🙂 Also you can remove the "// could store postage too". I noticed that you have a login area, how will the order details be sent to you if the paypal button is on the cart homepage? I have a button called complete checkout that basically saves the carts session contents i a row with a random order id and total price. The order id and total price are saved in there own session on order.php. Then redirected to another page that has the paypal button on it. You can also submit both forms at once but if the user has javascript disabled the you endup not getting the order and just the paypal payment which is a real pain trying to explain to a customer "ermmm, sorry we have lost your order. Could you tell us what you required for the £xxx?" 😉

zar786

Yea here it is:

<?php
session_start(); 
$_SESSION['dvd_id'] = $_POST['dvd_id'];
$_SESSION['total'] = $_POST['total'];
$page_title = 'ZarDVDs.890m.com - Shopping Cart';
include ('./includes/header.html');
include ('./includes/leftSidebar.html');
// Include MySQL class
require_once('./includes/mysql.class.php');
// Include database connection
require_once('./includes/global.inc.php');
// Include functions
require_once('./includes/functions.inc.php');
// Process actions

$cart = $_SESSION['cart'];
$action = $_GET['action'];
switch ($action) {
	case 'add':
		if ($cart) {
			$cart .= ','.$_GET['dvd_id'];
		} else {
			$cart = $_GET['dvd_id'];
		}
		break;
	case 'delete':
		if ($cart) {
			$items = explode(',',$cart);
			$newcart = '';
			foreach ($items as $item) {
				if ($_GET['dvd_id'] != $item) {
					if ($newcart != '') {
						$newcart .= ','.$item;
					} else {
						$newcart = $item;
					}
				}
			}
			$cart = $newcart;
		}
		break;
	case 'update':
	if ($cart) {
		$newcart = '';
		foreach ($_POST as $key=>$value) {
			if (stristr($key,'qty')) {
				$dvd_id = str_replace('qty','',$key);
				$items = ($newcart != '') ? explode(',',$newcart) : explode(',',$cart);
				$newcart = '';
				foreach ($items as $item) {
					if ($dvd_id != $item) {
						if ($newcart != '') {
							$newcart .= ','.$item;
						} else {
							$newcart = $item;
						}
					}
				}
				for ($i=1;$i<=$value;$i++) {
					if ($newcart != '') {
						$newcart .= ','.$dvd_id;
					} else {
						$newcart = $dvd_id;
					}
				}
			}
		}
	}
	$cart = $newcart;
	break;
}
$_SESSION['cart'] = $cart;
echo '<div id="main"> <img src="/images/shoppingCart.gif">';
echo '<p>Please check the quantities and update the cart if necessary</p>';
echo showCart();

?>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post" style="display:inline" target="_blank" name="form_2"> 
  <input name="Pay For Order" type="submit" id="Pay For Order" value="Pay For Order"/> 
  <input type="hidden" name="cmd" value="_xclick" /> 
  <input type="hidden" name="business" value="freemanz24@hotmail.com" />
  <input type="hidden" name="item_name" value="ZarDVDs :: Order #<?php echo $_SESSION['dvd_id']; ?> "/> 
  <input type="hidden" name="amount" value="<?php echo $_SESSION['total']; ?>" /> 
  <input type="hidden" name="currency_code" value="GBP" /> 
  <input type="hidden" name="shipping" value="0.00">
  <input type="hidden" name="no_shipping" value="2"> 
</form> 
</div>
<?php

include ('./includes/rightSidebar.html');
include ('./includes/footer.html'); // Include the HTML footer.

?>

This is for a project so i'm not actually gonna sell any dvd's so i just want a method for users to checkout through paypal, i thought about doing it that way, sending the users to a seperate page before they checkout, would it be easier?