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Stripe payment gateway integration using cUrl - Codeigniter 3

By The Developer Club

 


Stripe payment gateway integration using cUrl - Codeigniter 3

  • Sign up for a Stripe account at https://stripe.com/
  • Obtain Stripe api key
  • Setup Codeigniter 3 Project
  • Create a library for Stripe integration
Create library inside libraries folder  

application => libraries => Stripe_library.php


<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Stripe_library {       
    protected $CI;
	// Default Constructor
	public function __construct() {
    	$this->CI =& get_instance();
        // Load necessary libraries and helpers here if needed
    }
	// Create function for checkout 
    public function create_checkout_session($amount, $currency, $success_url, $cancel_url) {
        $stripe_secret_key = 'Stripe_secret_key';
        $api_url = 'https://api.stripe.com/v1/checkout/sessions';
        $stripeamount = $amount * 100;
        $data = [
            'payment_method_types' => ['card'],
            'line_items' => [
                [
                    'price_data' => [
                        'currency' => $currency,
                        'product_data' => [
                            'name' => 'Document Translation',
                        ],
                        'unit_amount' => $stripeamount,
                    ],
                    'quantity' => 1,
                ],
            ],
            'mode' => 'payment',
            'success_url' => $success_url,
            'cancel_url' => $cancel_url,
        ];

        $ch = curl_init($api_url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
        curl_setopt($ch, CURLOPT_USERPWD, $stripe_secret_key . ':');

        $response = curl_exec($ch);
        curl_close($ch);

        return json_decode($response, true);
    }
  }
  ?>

Create controller inside controller folder
<?php defined('BASEPATH') OR exit('No direct script access allowed');
header('Access-Control-Allow-Origin: *');
header("Access-Control-Allow-Methods: GET, OPTIONS");
class Payment extends CI_Controller{
    
    public function __construct()
    {
       parent::__construct();
       $this->load->library('stripe_library');
    }

    public function checkout() {
        $amount = "Amount"; // Enter Amount
        $productname = "Payment for"; // Enter Product Name
        $currency = 'inr'; // Enter Currency
        $success_url = base_url('payment/success');
        $cancel_url = base_url('payment/cancel');
        $session = $this->stripe_library->create_checkout_session($amount, $currency, $success_url, $cancel_url);
        echo json_encode($session['url']);
    }
    public function success() {
        // Handle successful payment here
        // You can retrieve payment details from $_GET or $_POST
    }
    public function cancel() {
        // Handle cancelled payment here
    }
Create payment.php file inside views.
Send payment checkout request using ajax. so we have create function paynow on button click. 
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Stripe Payment Integration</title>
</head>
<body>
    <form id="payment-form">
        <input type="text" id="amount" placeholder="Enter Amount">
        <div id="card-element"></div>
        <button id="submit" onclick="paynow()">Pay</button>
    </form>

    <script>
        function paynow(){
        var amount = $('#total_amount').text();
        $.ajax({
            url: "<?php echo base_url('payment/checkout');?>",
            dataType: "json",
            type: "POST",
            data: {amount:amount},
            success: function(response){
                window.open(response, '_blank');
            }
        })
        }

    </script>
</body>
</html>




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