Using the PHP QR code two-dimensional code class to generate a two-dimensional code

QR code is a common two-dimensional code, which is used to record data information with a specific geometry on a plane. The QR principle is more complicated to understand, and it takes a lot of time to deal with it yourself. Here we recommend a PHP class library that generates QR code, PHP qr code. I've used it myself, and I haven't found any problems to share with you.

Download Address: http://download.csdn.net/detail/u011986449/6865449

QR code

Data represents the number of records to be recorded, if it is stored utf-8 encoded in Chinese, up to 984.
ECC indicates the level of error correction, the higher the level of error correction, the larger the picture will be generated.

L level    7% codewords can be modified
m level    15% codewords can be modified
Q level    25% codewords can be modified by
H level    30% codewords can be modified

Size represents the pixels of each black dot in a picture.

QR Code detailed principle can refer to QR Wikipedia, the Chinese version introduction is relatively few, the English version introduction is very comprehensive, the recommendation looks English edition

Sweep the two-dimensional code below and try!

The code is:

<?php    
ini_set (' display_errors ', ' on ');    
$PNG _temp_dir = dirname (__file__). Directory_separator. ' Temp '. Directory_separator;    
$PNG _web_dir = ' temp/';    
        
Include "qrlib.php";    QRCode lib    
        
$data = ' http://blog.csdn.net/phpfenghuo?viewmode=contents ';//data    
$ECC = ' H ';//L-smallest, M, Q , h-best    
$size =//1-50    
        
$filename = $PNG _temp_dir. ' Qrcode_ '. Time (). PNG ';    
QRCode::p ng ($data, $filename, $ECC, $size, 2);    
chmod ($filename, 0777);    
Echo '  ';    
? >