The following task needs to be done
1. Create a order form to collect data (text and numbers)
2. Build a new database in MySQL DB to collect the order data.
3. Integrate Instamojo and/or Paypal to the website to work as the following specification
4. Upon successful payment, trigger a php page (the php page needs to be created)
The user will fill the form, and given the data, the amount of payment to be collected will be dynamically provided (based on certain logic).
Next, the user will click pay and the payment gateway will collect the payment.
After collecting the payment, the data from the form will be entered in to the database and the website will execute a php script that will trigger a shell script in the server with the parameters from the order form.
Current setup uses LAMP on Digital Ocean.
Planning to use Instamojo and Paypal.
Contact me for more details
I have also attached the basic requirement. Please have a look. More details can be discussed once the project is confirmed.