In this tutorial, we will tell you how to integration paypal payment gateway in codeigniter Framework.
The Paypal payment gateway is a popular payment gateway method and it is easily used for the project. so many developers prefer that payment gateway method.
PayPal is a secure payment method and it’s work-based using API. it provides two environments for the user like a sandbox and live.
Overview
Step 1: Download Paypal Payment Gateway Library
Step 2: Create Database Tables
Step 3: Create Controller
Step 4: Create a Model
Step 5: Create View File
Step 1: Download Paypal Payment Gateway Library
If you want to download the PayPal payment Gateway library then you can download it on https://github.com/xpertphp/paypal-payment-gateway-library-for-codeigniter git repository.
Step 2: Create Database Tables
In this step, we have to create two tables in the database, so we will create a database using the below code.
CREATE TABLE `products` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `image` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `price` float(10,2) NOT NULL, `status` tinyint(1) NOT NULL DEFAULT '1', PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
CREATE TABLE `payments` ( `payment_id` int(11) NOT NULL AUTO_INCREMENT, `user_id` int(11) NOT NULL, `product_id` int(11) NOT NULL, `txn_id` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `payment_gross` float(10,2) NOT NULL, `currency_code` varchar(5) COLLATE utf8_unicode_ci NOT NULL, `payer_email` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `payment_status` varchar(255) COLLATE utf8_unicode_ci NOT NULL, PRIMARY KEY (`payment_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
Step 3: Create Controller
In this step, we will create a Products.php file in the “application/controller” directory and paste the below code in this controller.
application/controller/Products.php
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Products extends CI_Controller
{
function __construct() {
parent::__construct();
$this->load->library('paypal_lib');
$this->load->model('product');
$this->load->database();
}
function index(){
$data = array();
//get products inforamtion from database table
$data['products'] = $this->product->getProducts();
//loav view and pass the products information to view
$this->load->view('products/index', $data);
}
function buyProduct($id){
//Set variables for paypal form
$returnURL = base_url().'paypal/success'; //payment success url
$failURL = base_url().'paypal/fail'; //payment fail url
$notifyURL = base_url().'paypal/ipn'; //ipn url
//get particular product data
$product = $this->product->getProducts($id);
$userID = 1; //current user id
$logo = base_url().'Your_logo_url';
$this->paypal_lib->add_field('return', $returnURL);
$this->paypal_lib->add_field('fail_return', $failURL);
$this->paypal_lib->add_field('notify_url', $notifyURL);
$this->paypal_lib->add_field('item_name', $product['name']);
$this->paypal_lib->add_field('custom', $userID);
$this->paypal_lib->add_field('item_number', $product['id']);
$this->paypal_lib->add_field('amount', $product['price']);
$this->paypal_lib->image($logo);
$this->paypal_lib->paypal_auto_form();
}
function paymentSuccess(){
//get the transaction data
$paypalInfo = $this->input->get();
$data['item_number'] = $paypalInfo['item_number'];
$data['txn_id'] = $paypalInfo["tx"];
$data['payment_amt'] = $paypalInfo["amt"];
$data['currency_code'] = $paypalInfo["cc"];
$data['status'] = $paypalInfo["st"];
//pass the transaction data to view
$this->load->view('paypal/paymentSuccess', $data);
}
function paymentFail(){
//if transaction cancelled
$this->load->view('paypal/paymentFail');
}
function ipn(){
//paypal return transaction details array
$paypalInfo = $this->input->post();
$data['user_id'] = $paypalInfo['custom'];
$data['product_id'] = $paypalInfo["item_number"];
$data['txn_id'] = $paypalInfo["txn_id"];
$data['payment_gross'] = $paypalInfo["mc_gross"];
$data['currency_code'] = $paypalInfo["mc_currency"];
$data['payer_email'] = $paypalInfo["payer_email"];
$data['payment_status'] = $paypalInfo["payment_status"];
$paypalURL = $this->paypal_lib->paypal_url;
$result = $this->paypal_lib->curlPost($paypalURL,$paypalInfo);
//check whether the payment is verified
if(preg_match("/VERIFIED/i",$result)){
//insert the transaction data into the database
$this->product->storeTransaction($data);
}
}
}
?>
Step 4: Create a Model
In this step, we will create a Product.php file in the “application/models” directory and paste the below code in this model.
application/models/Product.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Product extends CI_Model{
public function __construct()
{
$this->load->database();
}
//get and return product rows
public function getProducts($id = ''){
$this->db->select('id,name,image,price');
$this->db->from('products');
if($id){
$this->db->where('id',$id);
$query = $this->db->get();
$result = $query->row_array();
}else{
$this->db->order_by('name','asc');
$query = $this->db->get();
$result = $query->result_array();
}
return !empty($result)?$result:false;
}
//insert transaction data
public function storeTransaction($data = array()){
$insert = $this->db->insert('payments',$data);
return $insert?true:false;
}
}
?>
Step 5: Create View File
So finally, we need to create two directories in the “application/views/” directory like product and PayPal. so we will create that directory and create files in that directory.
application/views/products/index.php
<!DOCTYPE html>
<html>
<head>
<title>How To Integration Paypal Payment Gateway In Codeigniter - XpertPhp</title>
<!-- Latest CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
</head>
<body>
<div class="container">
<h2 class="mt-3 mb-3">Products</h2>
<div class="row">
<?php if(!empty($products)): foreach($products as $product): ?>
<div class="thumbnail">
<img src="<?php echo base_url().'assets/images/'.$product['image']; ?>" alt="">
<div class="caption">
<h4 class="pull-right">$<?php echo $product['price']; ?></h4>
<h4><a href="javascript:void(0);"><?php echo $product['name']; ?></a></h4>
</div>
<a href="<?php echo base_url().'products/buyProduct/'.$product['id']; ?>"><img src="<?php echo base_url(); ?>assets/images/buy-button" style="width: 70px;"></a>
</div>
<?php endforeach; endif; ?>
</div>
</div>
</body>
</html>
application/views/paypal/paymentSuccess.php
<!DOCTYPE html>
<html>
<head>
<title>Transaction Successfull - Codeigniter Paypal Integration Example - XpertPhp</title>
<!-- Latest CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
</head>
<body>
<div class="container">
<h2 class="mt-3 mb-3">Transaction Detalis</h2>
<div class="row">
<span>Your payment was successful done, thank you for purchase.</span><br/>
<span>Item Number :
<strong><?php echo $item_number; ?></strong>
</span><br/>
<span>TXN ID :
<strong><?php echo $txn_id; ?></strong>
</span><br/>
<span>Amount Paid :
<strong>$<?php echo $payment_amt.' '.$currency_code; ?></strong>
</span><br/>
<span>Payment Status :
<strong><?php echo $status; ?></strong>
</span><br/>
</div>
</div>
</body>
</html>
application/views/paypal/paymentFail.php
<!DOCTYPE html>
<html>
<head>
<title>Transaction Fail - Codeigniter Paypal Integration Example - XpertPhp</title>
<!-- Latest CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
</head>
<body>
<div class="container">
<h2 class="mt-3 mb-3">Transaction Detalis</h2>
<div class="row">
<p>Sorry! Your last transaction was cancelled.</p>
</div>
</div>
</body>
</html>
Note:- Paypal Payment Gateway Live
If you want to change the sandbox to live then you can follow the below details.
now we will open the “application/config/paypallib_config.php” file and change the sandbox, and business email, pin the config file. See the below changes in a config file.
//Change the SANDBOX environment to FALSE $config['sandbox'] = FALSE; //Change the BUSINESS EMAIL $config['business'] = 'live_business@email.com';
