QR Scanner Generator

A refreshed core PHP QR generator that works cleanly on modern PHP, exports PNG files locally, and optionally stores a simple history in MySQL.

What changed

• safer request handling with CSRF protection and escaped output
• prepared statements instead of raw SQL inserts
• responsive generator UI with preview and recent history
• local file downloads instead of the old hard-coded remote URL
• database becomes optional for generation; if MySQL is offline, PNG export still works

Requirements

• PHP 8.x with mysqli, session, and gd
• MySQL or MariaDB if you want database history
• write access to userQr/

Setup

1. Import qrcodes.sql if you want database-backed history.
2. Configure database credentials through environment variables or by editing config.php.
3. Serve the project through PHP or Apache/Nginx and open index.php.

Supported environment variables:

• QR_DB_HOST
• QR_DB_USER
• QR_DB_PASS
• QR_DB_NAME

Notes

• Generated PNG files are written to userQr/.
• The bundled QR library under meRaviQr/ was left in place to keep the update focused on the app layer.