By endroid

This Symfony lets you generate QR Codes using the endroid/qr-code library. It provides the following features.

• Configure your defaults (like image size, default writer etc.)
• Generate QR codes quickly from anywhere via the factory service
• Generate QR codes directly by typing an URL like /qr-code/<text>.png?size=300
• Generate QR codes or URLs directly from Twig using dedicated functions

Use Composer to install the library.

$ composer require endroid/qr-code-bundle

When you use Symfony, the installer makes sure that services are automatically wired. If this is not the case you can find the configuration files in the .install/symfony folder.

The bundle makes use of a factory to create QR codes. The default parameters applied by the factory can optionally be overridden via the configuration.

endroid_qr_code:
    writer: 'svg'
    size: 300
    margin: 10
    foreground_color: { r: 0, g: 0, b: 0 }
    background_color: { r: 255, g: 255, b: 255 }
    error_correction_level: low # low, medium, quartile or high
    encoding: UTF-8
    label: Scan the code
    label_font_size: 20
    label_alignment: left # left, center or right
    label_margin: { b: 20 }
    logo_path: '%kernel.root_dir%/../vendor/endroid/qr-code/assets/images/symfony.png'
    logo_width: 150
    logo_height: 200
    validate_result: false # checks if the result is readable
    writer_options:
        exclude_xml_declaration: true

Now you can retrieve the factory from the service container and create a QR code. You can also pass options to override defaults set by your configuration.

$qrCode = $qrCodeFactory->create('QR Code', ['size' => 200]);

The bundle also provides a response object to ease rendering of the resulting image by automatically saving to string and setting the correct content type.

$response = new QrCodeResponse($qrCode);

The bundle provides a controller that allows you to generate QR codes simply by opening an URL like /qr-code/<text>.png?size=300. You can configure the prefix in your routing file and pass any of the existing options via query string.

The bundle provides a Twig extension for generating a QR code URL, path or data URI. You can use the second argument of any of these functions to override any defaults defined by the bundle or set via your configuration.

<img src="{{ qr_code_path(message) }}" />
<img src="{{ qr_code_url(message, { writer: 'eps' }) }}" />
<img src="{{ qr_code_data_uri(message, { writer: 'svg', size: 150 }) }}" />

Version numbers follow the MAJOR.MINOR.PATCH scheme. Backwards compatibility breaking changes will be kept to a minimum but be aware that these can occur. Lock your dependencies for production and test your code when upgrading.

This source code is subject to the MIT license bundled in the file LICENSE.