php生成二维码的类库：PHP QR Code下载及使用方法

使用PHP QR Code类库创建二维码

使用举例浏览器输出：

<?

include "phpqrcode/phpqrcode.php";

$value="http://s.bookphone.cn/chinabook/index.php/adminhtml/Croles/admin";

$errorCorrectionLevel = "L";

$matrixPointSize = "4";

QRcode::png($value, false, $errorCorrectionLevel, $matrixPointSize);

exit;

?>

文件输出二维码

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);

生成中间带logo的二维码

<?php

include('phpqrcode/phpqrcode.php');

$value='http://xy.bookphone.cn';

$errorCorrectionLevel = 'L';

$matrixPointSize = 6;

QRcode::png($value, 'xiangyang.png', $errorCorrectionLevel, $matrixPointSize, 2);

echo "QR code generated"."<br />";

$logo = 'logo.png';

$QR = 'xiangyang.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,'xiangyanglog.png');

?>