Payment Gateway: The payment gateway is an online service that authorizes and processes payments for online businesses. It provides a payment network between the customer and the merchant on the final amount (pay amount/order's amount). There are two parts to completing an online transaction. 1. You will need a payment gateway (to accept the payment details and connect to the payment networks). 2. A merchant account (to receive the funds). Some of the commonly used payment gateways are as follows: PayPal, Paytm, Razorpay, etc. Here, We are talking about the simplest way to integrate Razorpay Payment Gateway. You just need to follow the following steps: 1. Create a Razorpay account and get an API key and secret key from your account settings. 2. Open the command prompt, Install composer for PHP dependencies and then install Razorpay via the composer. 3. Integration of Razorpay payment gateway in your project. 4. Start acce...