cQRCode is a class that generates QR code images in GIF, JPEG, and PNG formats. It takes a string of information to encode and can either serve the image with the current script output or save it to a file. The size of matrix points and the error correction level parameters are configurable.
QR code generator is a PHP class that can be used to generate QR Code images using Google Chart API. It can send an HTTP request to the Google Chart API Web server to request the generation of a PNG image that represents the QR code graphic for a given information snippet. Currently the class can request the generation of QR codes for information snippets of the following types: bookmark, text, SMS message, phone number, contact information, e-mail message, geo-location, WIFI access, i-appli metadata, or abitrary content-type. The generated QR code image can be returned as a string, served for download, or returned as a URL string.