How do I integrate PayPal Payments Standard with OpenCart?

Here's how:

  1. Log in to your OpenCart admin panel.
  2. Click the Puzzle Icon.
  3. Click Extensions.
  4. Select Payments from the drop-down menu.
  5. Select the + for PayPal Payments Standard (in the Payments Module list) to add this module.
  6. Once the module has been added, click the Pencil icon to edit the module settings.
  7. Configure the following fields:
  • E-Mail - Enter your PayPal email address.
  • Sandbox Mode - Select No.
  • Transaction Method - Select either Authorization or Sale.
  • Status - Set to Enabled.
  1. Review additional options.
  2. Click Save.

See also:
OpenCart Support
OpenCart Community Forum