PayPal Integration in PHP

paypal integration in phpPayPal has become the most popular method of online payments in recent years due to the fact that it is safe, convenient, and reliable. Because of its ongoing popularity, it has become a necessity for online retailers to utilize this payment method on their websites. In order to successfully use PayPal, some online merchants must first integrate PayPal with PHP.

Not sure how to properly use and work with PHP? Then you should check out the useful Udemy course PHP 101. This course is the first step to get the basics on PHP programming and the instructions will provide you with excellent helpful tools for navigating through this programing language and will help you work your way through all the initial PHP from stringing functions to the PHP.ini File.

What is PHP?

PHP is a type of scripting language that works within servers. It is most commonly used for web development, because it was designed for such a purpose. PHP can also be used for general-purpose programming language. PHP is a computer mechanism that can be just as unsecure as other computer features, so when writing this script language you should make sure you can write it well and securely. Writing Secure PHP Code – PHP Security Tutorial (an Udemy course) is a great course for learning all about PHP Code and how to secure it. This course provides units on noticing problems, understanding filtering, prevention and protection of common attacks. You might also wish to read “PHP Basics for Web Beginners” here on the Udemy blog. This article provides you with a more detailed account of what PHP is and how to use it successfully when creating your websites.

Setting up the Process

When integrating PHP with PayPal the first step is to make sure you actually have a PayPal account. If you do not then now is the time to create one. Then you are ready to begin the first stages of the integration. In PayPal, create a facilitator email and a personal one to act as an email for a test account. The next step is to get a PayPal integration script; you can get one for free download on many sites. An Udemy course that provides excellent insight and instruction for the integration of PayPal and PHP is Build E-commerce website with PHP, MySQL, jQuery and PayPal. This Udemy course offers twenty four sections of instruction, including cataloguing, building framework, databases, object orientated programming. With the course you will also receive in-depth instruction on all the aspects of creating the code for your store: large, small and main baskets as well as checkout, login, and validation.

Working through the Code

Once you have created your facilitator and test account email you are ready to open the PayPal.php file. When you have opened the file you will change these lines in the code:

EMAIL_ADD

and

PAYPAL_EMAIL_ADD.

You will make the EMAIL_ADD line so that this email receives, during IPN, the transaction notifications about when the order is pending and completed.

The PAYPAL_EMAIL_ADD will be changed into the email you want to use to receive money from customers. You will then define the facilitator email and the first PayPal facilitator address. From the form you will then delete PayPal’s ‘?sandbox=1’ so it will not be present during current transactions.

After this, you will be able to customize the form with your own choices of fields. Next you will take the new form and post it onto a page that will be used to send PayPal the data of the form and to send PayPal.php the values. You will then save the data of the form and the transaction will begin. All of this information will then be sent to the email account you set up for the notifications—the EMAIL_ADD.

Finally, you will use PayPal’s IPN (Instant Payment Notification) module, which will transfer all the transaction information between the PayPal Server and your Server. To set this up you will go into the sandbox account in PayPal and open up “IPN Simulator” in the “Application” tab. From there you will paste in your URL in the handler for the IPN. You will then decide on which type of checkout cart you want; you should choose “Transaction Type” for this. Next you will take the txm_id you received on the PayPal screen and select “payment_status” and plug it into the data and select the “Send IPN” button. Your notification email will receive a message as to whether or not the IPN was sent successfully.

If it is successful, you are ready to mark the payment_status as “completed” and to save all the data before checking it out on your website. For more helpful guidelines on using the Instant Payment Notification (IPN) module from PayPal, you should check out Udemy’s course entitled How to Set Up PayPal Instant Payment Notification with PHP. This course will assist you with helpful steps of setting up your online store with the IPN and will show you how to use PHP to accomplish this. You will be instructed on working with the code to set up the IPN as well as guides for the database usage.

Final Thoughts

When you are integrating PayPal with PHP make certain that you follow the steps precisely in order to avoid errors. Save the code often and watch your emails that you created for contact between yourself and your customers. By taking this advice and using some of the great Udemy courses, you will be right on track in tackling the integration of PHP and PayPal!