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Getting Started with PayPal
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Probably the best description of this service is the one found on its web site: PayPal is an account-based system that lets anyone with an email address securely send and receive online payments using their credit card or bank account.
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CHAPTER 6 RECEIVING PAYMENTS USING PAYPAL
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Instead of paying the client directly, the visitor pays PayPal using a credit card or bank account. The client then uses its PayPal account to get the money received from the customers. At the time of writing, no cost is involved in creating a new PayPal account, and the service is free for the buyer. The fees involved when receiving money are shown at http://www.paypal.com/cgi-bin/webscr cmd=_display-fees-outside.
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PAYPAL LINKS AND RESOURCES
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Check out these resources when you need more information than this short chapter provides: Website Payments Standard Integration Guide: Contains information previously contained in separate manuals, such as the Shopping Cart manual and the Instant Payments Notification manual. Get it at https://www.paypal.com/en_US/pdf/PP_WebsitePaymentsStandard_ IntegrationGuide.pdf. The PayPal Developer Network: The official resource for PayPal developers, which you can access at https://www.paypal.com/pdn. PayPalDev: According to the site, this is an independent forum for PayPal developers. Access it at http://www.paypaldev.org/. You ll also find numerous links to various PayPal resources.
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In the following exercise, you ll create a new PayPal account, and then integrate it with HatShop. (The steps to create a PayPal account are also described in more detail in the PayPal manuals mentioned earlier.)
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Exercise: Creating the PayPal Account
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To create your PayPal account, follow these steps: 1. Browse to http://www.paypal.com using your favorite web browser. 2. Click the Sign Up link. 3. PayPal supports three account types: Personal, Premier, and Business. To receive credit card payments, you need to open a Premier or Business account. Choose your country from the combo box, and click Continue. 4. Complete all of the requested information, and you will receive an email asking you to revisit the PayPal site to confirm the details you have entered.
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How It Works: The PayPal Account
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After the PayPal account is set up, the email address you provided will be your PayPal ID. A lot of functionality is available within the PayPal service because the site is easy to use and many of the functions are self-explanatory, we won t describe everything here. Remember that these sites are there for your business, so they re more than happy to assist with any of your queries. Now let s see how you can actually use the new account for the web site.
CHAPTER 6 RECEIVING PAYMENTS USING PAYPAL
Integrating the PayPal Shopping Cart and Checkout
In the first stage of development (the current stage), you need to integrate the shopping cart and checkout functionality from PayPal. In the second stage of development, after you create your own shopping cart, you ll only need to rely on PayPal s checkout mechanism. To accept payments, you need to add two important elements to the user interface part of the site: Add to Cart buttons for each product and a View Cart button somewhere on the page. PayPal makes adding these buttons a piece of cake. The functionality of those buttons is performed by secure links to the PayPal web site. For example, the following form represents the Add to Cart button for a product named Black Puritan Hat that costs $74.99: <form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post"> <input type="hidden" name="cmd" value="_cart" /> <input type="hidden" name="business" value="youremail@example.com" /> <input type="hidden" name="item_name" value="Black Puritan Hat" /> <input type="hidden" name="amount" value="74.99" /> <input type="hidden" name="currency" value="USD" /> <input type="hidden" name="add" value="1" /> <input type="hidden" name="return" value="www.example.com" /> <input type="hidden" name="cancel_return" value="www.example.com" /> <input type="submit" name="submit" value="Add to Cart" /> </form> The fields are predefined, and their names are self-explanatory. The most important is business, which must be the email address you used when you registered the PayPal account (the email address that will receive the money). Consult PayPal s Website Payments Standard Integration Guide for more details.
Although we won t use them for our site, it s good to know that PayPal provides button generators Tip
based on certain data you provide (product name, product price), giving you an HTML code block similar to the one shown previously. Click the Developers link at the bottom of the first page, and then click PayPal Solutions in the menu on the left to find the button generators.
You need to make sure this HTML code gets added to each product, so you ll have Add to Cart buttons for each product. To do this, you must modify the products_list.tpl file. Next, you ll add the View Cart button somewhere on index.tpl, so it will be accessible at any time for the visitor. The View Cart button can be generated using a similar structure. An alternative way to generate the Add to Cart and View Cart links is to use links such as the following, instead of forms as shown earlier: https://www.paypal.com/cgi-bin/webscr cmd=_cart&business=your_email_address& item_name=Black Puritan Hat&amount=74.99&amount=74.99¤cy=USD&add=1& return=www.example.com&cancel_return=www.example.com
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