1 Answers
A:
To integrate Paytm Payment Gateway in CodeIgniter, register for a Paytm merchant account and download the Paytm PHP SDK. Configure your Paytm merchant details in app/Config/Constants.php. Generate a checksum using the SDK for secure transactions. Create transaction requests in your controller and handle Paytm's callback to verify payments. Finally, test the integration in sandbox mode before going live.
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