php使用qr生成二维码的示例分享

<?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://www.jb51.net'; // data  
$ecc = 'H'; // L-smallest, M, Q, H-best  
$size = 10; // 1-50  

$filename = $PNG_TEMP_DIR.'qrcode_'.time().'.png';  
QRcode::png($data, $filename, $ecc, $size, 2);  
chmod($filename, 0777);  
echo '<img src="'.$PNG_WEB_DIR.basename($filename).'" />';  
?>