# Overview

## Features

- Creation of [Model 2 QR Codes](https://www.qrcode.com/en/codes/model12.html), [Version 1 to 40](https://www.qrcode.com/en/about/version.html)
- [ECC Levels](https://www.qrcode.com/en/about/error_correction.html) L/M/Q/H supported
- Mixed mode support (encoding modes can be combined within a QR symbol). Supported modes:
	- numeric
	- alphanumeric
	- 8-bit binary
	- 13-bit double-byte kanji (Japanese, Shift-JIS) and hanzi (simplified Chinese, GB2312/GB18030) as [defined in GBT18284-2000](https://www.chinesestandard.net/PDF/English.aspx/GBT18284-2000)
- Flexible, easily extensible output modules, built-in support for the following output formats:
	- [GdImage](https://www.php.net/manual/book.image)
	- [ImageMagick](https://www.php.net/manual/book.imagick)
	- Markup types: SVG, HTML, etc.
	- String types: JSON, plain text, etc.
	- Encapsulated Postscript (EPS)
	- PDF via [FPDF](https://github.com/setasign/fpdf)
- QR Code reader (via GD and ImageMagick)


## Requirements
- PHP 7.4+
	- [`ext-mbstring`](https://www.php.net/manual/book.mbstring.php)
	- optional:
		- [`ext-fileinfo`](https://www.php.net/manual/book.fileinfo.php) (required by `QRImagick` output)
		- [`ext-gd`](https://www.php.net/manual/book.image)
		- [`ext-imagick`](https://github.com/Imagick/imagick) with [ImageMagick](https://imagemagick.org) installed
		- [`setasign/fpdf`](https://github.com/setasign/fpdf) for the PDF output module

For the QR Code reader, either `ext-gd` or `ext-imagick` is required!


## Framework Integration

- Drupal:
	- [Two-factor Authentication `tfa`](https://www.drupal.org/project/tfa) (Drupal 8+)
	- [Google Authenticator Login `ga_login`](https://www.drupal.org/project/ga_login) (deprecated, Drupal 7)
- Symfony
	- [phpqrcode-bundle](https://github.com/jonasarts/phpqrcode-bundle)
- WordPress:
	- [wp-two-factor-auth](https://github.com/sjinks/wp-two-factor-auth)
	- [simple-2fa](https://wordpress.org/plugins/simple-2fa/)
	- [floating-share-button](https://github.com/qriouslad/floating-share-button)
- WoltLab Suite
	- [two-step-verification](http://pluginstore.woltlab.com/file/3007-two-step-verification/)
- other uses:
	- [dependents](https://github.com/chillerlan/php-qrcode/network/dependents) / [packages](https://github.com/chillerlan/php-qrcode/network/dependents?dependent_type=PACKAGE)
	- [Appwrite](https://github.com/appwrite/appwrite)
	- [Cachet](https://github.com/CachetHQ/Cachet)
	- [GÉANT CAT](https://github.com/GEANT/CAT)
	- [openITCOCKPIT](https://github.com/it-novum/openITCOCKPIT)
	- [twill](https://github.com/area17/twill)
	- [Elefant CMS](https://github.com/jbroadway/elefant)
- Articles:
	- [Twilio: How to Create a QR Code in PHP](https://www.twilio.com/blog/create-qr-code-in-php) (featuring v4.3.x)