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A simple CodeIgniter 3.x library for accepting payments using Paystack

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CodeIgniter Paystack Library

A simple CodeIgniter 3.x library for accepting payments using Paystack https://paystack.com

Usage

  1. Download the Paystack_lib.php file and put it inside your application/libraries folder.

  2. Get the Public and Secret keys (both test and live) from your Paystack dashboard. Click Here.

  3. There are two method you can use to store your API Keys, the configuration file method (simpler) OR the database storage method (highly recommended).

    Config File Method:
    If you choose to use the configuration file method, download this file config/paystack.php, and paste your API keys there:

    $config['test_public_key'] = 'PASTE_YOUR_TEST_PUBLIC_KEY_HERE';  
    $config['test_secret_key'] = 'PASTE_YOUR_TEST_SECRET_KEY_HERE';   
    $config['live_public_key'] = 'PASTE_YOUR_LIVE_PUBLIC_KEY_HERE';    
    $config['live_secret_key'] = 'PASTE_YOUR_LIVE_SECRET_KEY_HERE';
    

    Make sure that the file is saved in your application/config/ folder.

    Database Storage (recommended):
    Depending on how your database is structured, you can save the API keys in a table, and then fetch the details from that table.

  4. In your controller that holds the page where you want the payment to be triggered, load the paystack library like so:

    $this->load->library('paystack_lib');

    Then add the email address, amount and callback url in the fields that will be sent to paystack's api, like so:

    $this->paystack_lib->add_field('email', 'THE CUSTOMER EMAIL ADDRESS');
    $this->paystack_lib->add_field('amount', 'TOTAL AMOUNT TO BE PAID'); // This amount MUST be multiplied by 100.
    $this->paystack_lib->add_field('callback_url', 'YOUR RETURN URL');
    

    Then, you can render the paystack form like so:

    $this->paystack_lib->ps_auto_form();

  5. When the payment process is triggered, you should see a page like so:

Payment Processing

And then automatically redirect to Paystacks website to make payment, like so:

Pay with Paystack

  1. You need to verify the transaction to determine a failed or successful transaction. See application/controllers/Sample_controller.php for example.