Developer Builds Local Real-Time Payment Gateway Using PHP, PayHere, and ngrok

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A developer has built a complete real-time payment gateway integration using PHP, PayHere Sandbox, ngrok, and MySQL to simulate and test online payments in a local environment. The project features secure checkout integration, real-time callback handling, transaction logging, email notifications via PHPMailer, and PDF receipt generation using mPDF. ngrok was used to expose localhost securely, enabling PayHere to communicate with local callback URLs for payment notifications, returns, and cancellations. The codebase follows a modular structure with separate files handling checkout, verification, configuration, and database operations. The full source code, implementation guide, and database setup scripts have been published on GitHub for public access.

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