利用phpqrcode生成二维码实例代码
生成二维码是现在各大网站会看到一种功能了，下我们来看看利用phpqrcode库来快速生成二维码实例，希望文章对大家会有所帮助。
QR码详细原理可以参考QR维基百科，中文版介绍比较少，英文版介绍很全面，推荐看英文版的。
Description
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. Features •Supports QR Code versions (size) 1-40 •Numeric, Alphanumeric, 8-bit and Kanji encoding. •Implemented purely in PHP, no external dependencies except GD2 •Exports to PNG, JPEG images, also exports as bit-table •TCPDF 2-D barcode API integration •Easy to configure •Data cache for calculation speed-up •Debug data dump, error logging, time benchmarking •Provided merge tool helps deploy library as a one file •new! API documentation •new! Over 30 detailed examples •100% Open Source, LGPL Licensed
Demo
项目地址：http://sourceforge.net/projects/phpqrcode/
Generate fixed size images
* phpqrcode本身未提供固定大小二维码的设置，请参考 http://sourceforge.net/p/phpqrcode/discussion/1111884/thread/f739531a/
--- original/phpqrcode/qrimage.php 2010-08-18 07:06:24.000000000 -0700
+++ qrimage.php 2012-07-13 00:51:57.000000000 -0700
@@ -86,10 +86,15 @@
}
}
- $target_image =ImageCreate($imgW * $pixelPerPoint, $imgH * $pixelPerPoint);
- ImageCopyResized($target_image, $base_image, 0, 0, 0, 0, $imgW * $pixelPerPoint, $imgH * $pixelPerPoint, $imgW, $imgH);
+
+ $targetW = (defined('IMAGE_WIDTH') ? IMAGE_WIDTH : $imgW * $pixelPerPoint );
+ $targetH = (defined('IMAGE_HEIGHT') ? IMAGE_HEIGHT : $imgH * $pixelPerPoint );
+
+ $target_image =ImageCreate($targetW, $targetH);
+
+ ImageCopyResized($target_image, $base_image, 0, 0, 0, 0, $targetW, $targetH, $imgW, $imgH);
ImageDestroy($base_image);
return $target_image;
}
- }
No newline at end of file
+ }用法，设置生成的二维码宽高为 500px
define('IMAGE_WIDTH', 500);
define('IMAGE_HEIGHT', 500);
QRcode::png('http://www.phprm.com/)');本文地址：http://www.phprm.com/develop/56403.html
转载随意，但请附上文章地址:-)