php生成QRcode实例

<?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 = 'demo qrcode'; // data 
$e = 'H'; // L-smallest, M, Q, H-best 
$size = 10; // 1-50 
 
$filename = $PNG_TEMP_DIR.'qrcode_'.time().'.png'; 
QRcode::png($data, $filename, $e, $size, 2); 
chmod($filename, 0777); 
echo '<img src="'.$PNG_WEB_DIR.basename($filename).'" />'; 
?>