php生成二维码的类库(QRCode方法)

<?
include "phpqrcode/phpqrcode.php";
$value="http://www.jb200.com";
$errorCorrectionLevel = "L";
$matrixPointSize = "4";
QRcode::png($value, false, $errorCorrectionLevel, $matrixPointSize);
exit;
?>

<?php
include('phpqrcode/phpqrcode.php');
// 二维码数据
$data = 'http://s.bookphone.cn';
// 生成的文件名
$filename = '1111.png';
// 纠错级别：L、M、Q、H
$errorCorrectionLevel = 'L';
// 点的大小：1到10
$matrixPointSize = 4;
QRcode::png($data, $filename, $errorCorrectionLevel, $matrixPointSize, 2);
?>

<?php
//带中间logo的二维码
//by www.jb200.com
include('phpqrcode/phpqrcode.php');
$value='http://www.jb200.com';
$errorCorrectionLevel = 'L';
$matrixPointSize = 6;
QRcode::png($value, 'jbxue.png', $errorCorrectionLevel, $matrixPointSize, 2);
echo "QR code generated"."<br />";
$logo = 'logo.png';
$QR = 'jbxue.png';

if($logo !== FALSE)
{

$QR = imagecreatefromstring(file_get_contents($QR));
$logo = imagecreatefromstring(file_get_contents($logo));
$QR_width = imagesx($QR);
$QR_height = imagesy($QR);
$logo_width = imagesx($logo);
$logo_height = imagesy($logo);
$logo_qr_width = $QR_width / 5;
$scale = $logo_width / $logo_qr_width;
$logo_qr_height = $logo_height / $scale;
$from_width = ($QR_width - $logo_qr_width) / 2;
imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
}
imagepng($QR,'jbxue_log.png');
?>