php生成二维码 （类库PHP QR Code）

http://blog.csdn.net/small_rice_/article/details/22922455

2.php类库PHP QR Code
PHP QR Code is open source (LGPL) library for generating QR Code,
2-dimensional barcode. Based on libqrencode C library,
provides API for creating QR Code barcode images (PNG, JPEG thanks to GD2).
Implemented purely in PHP, with no external dependencies (except GD2 if needed).

地址：http://phpqrcode.sourceforge.net/
下载：http://sourceforge.net/projects/phpqrcode/
实例：

自己写的如下：

<?

include "./phpqrcode/phpqrcode.php";

$value="http://www.baidu.com";

$errorCorrectionLevel = "L";

$matrixPointSize = "6";

QRcode::png($value, false, $errorCorrectionLevel, $matrixPointSize);

exit;

?>