1. a3 : the amount that will be paid after each interval.
2. p3 : It would be the range of days, years, months that will make the interval.
3. t3 : This field may be M, Y, D.
There is also some variables to set trial phase of payment transaction.
See the book OpenCart 1.4 Template Design Cookbook.
See the book Joomla Mobile Development Beginners Guide
List of my works:
- Product Based Quantity Wise Shipping: Find it here.
- OpenSSLCOMMERZ: integrate SSLCOMMERZ with opencart: Find it here.
- Fine Search v.1.0 - Improves Opencart search feature to find relevant: Find it here.
- Opensweetcaptcha - An easy way to generate attractive captcha for your system!: Find it here.
- Custom Field Product - add unlimited custom fields to the product form: Find it here.
- Formcaptcha - add captcha on the register page: Find it here.