WHMCS Plugin Integration

Installation Steps

1. Get Plugin Files

   Download the plugin ZIP file from the OnePay WHMCS GitHub repository (click Code → Download ZIP) or contact your OnePay Relationship Officer to receive the files directly.

2. Extract Files

   Unzip the file contents on your computer

3. Install Gateway Module

   On your WHMCS server:

   • Navigate to modules/gateways directory
   • Copy the onepay folder and onepay.php file from the extracted ZIP
   • Paste them into the gateways directory

4. Install Callback Handler

   Still on your WHMCS server:

   • Navigate to gateways/callback directory
   • Copy the onepay.php file from the callback folder in the ZIP
   • Paste it into the callback directory

5. Configure Plugin Settings

   In your WHMCS admin panel:

   • Locate Onepay in the payment gateways section
   • Copy your App ID from the merchant portal
   • Copy your App Token from the merchant portal
   • Copy your Hash Salt from the merchant portal
   • Paste these values in their respective fields
   • Click Save to apply your changes

Video Tutorial