- How do I install **chillerlan/php-qrcode** in a Laravel project?
- Run `composer require chillerlan/php-qrcode` in your project root. The package has no Laravel-specific dependencies and works with PHP 8.4+. Ensure `ext-mbstring` is enabled for Unicode support. No additional Laravel setup is required.
- Can I generate QR codes dynamically in Laravel Blade templates?
- Yes. Use the `QRSvg` or `QRGdImage` renderers to generate QR codes inline. For example, embed an SVG directly in Blade: `{{ QRSvg::render($data) }}`. For images, stream the output via a route or store it in Laravel’s filesystem.
- What Laravel versions does this package support?
- The package is framework-agnostic and works with any Laravel version supporting PHP 8.4+. Tested compatibility exists with Laravel 10+ and 11, but no Laravel-specific features are required. Focus on PHP version support instead.
- How do I return a QR code as an image response in a Laravel API?
- Use Laravel’s `Response` helper: `return response($qrCode->render('image/png'), 200, ['Content-Type' => 'image/png']);`. Replace `'image/png'` with `'image/jpeg'` or `'svg'` as needed. Ensure the output module (e.g., `QRGdImage`) is installed.
- Does this package support QR code reading/scanning in PHP?
- Yes, it includes a ZXing-based reader. Use `QRReader::read()` with a file path or binary data. Requires `ext-gd` or `ext-imagick` for image decoding. Example: `$data = QRReader::read('path/to/qr.png');`
- What are the performance implications of generating thousands of QR codes?
- Heavy usage may strain server resources. Offload generation to Laravel Queues or use caching (e.g., `Cache::remember()`). For bulk operations, consider async jobs or pre-generating static QR codes for common data.
- How do I handle unsupported QR code data (e.g., custom ECI modes)?
- Wrap generation in a `try-catch` block. The package throws exceptions for unsupported formats. Validate input data (e.g., URLs, OTPs) before encoding. For advanced use cases, check the [documentation](https://php-qrcode.readthedocs.io) for custom ECI mode support.
- What are the required PHP extensions for full functionality?
- Critical: `ext-mbstring` (required for encoding). Optional but recommended: `ext-gd` or `ext-imagick` (for image output), `setasign/fpdf` (for PDF output). Test your environment with `php -m` to confirm availability.
- Can I use this package to validate uploaded QR codes in Laravel?
- Yes. Use the built-in reader to decode uploaded files (e.g., from a form). Example: `$reader = new QRReader(); $decoded = $reader->read(storage_path('uploads/qr.png'));`. Combine with Laravel’s validation rules for security.
- Are there alternatives to this package for Laravel QR code generation?
- Yes. Alternatives include `endroid/qr-code` (Laravel-specific wrapper) or `bacon/bacon-qr-code` (simpler but less feature-rich). **chillerlan/php-qrcode** stands out for its Model 2 support, mixed encoding, and built-in reader. Choose based on your need for advanced features or simplicity.