PHPQRCode类库创建中间带LOGO的二维码

例子，使用PHP QR Code类库创建二维码。

1，浏览器输出：

2. include "phpqrcode/phpqrcode.php";
3. $value="http://bbs.it-home.org";
4. $errorCorrectionLevel = "L";
5. $matrixPointSize = "4";
6. QRcode::png($value, false, $errorCorrectionLevel, $matrixPointSize);
7. exit;
8. ?>

2，文件输出二维码

2. include('phpqrcode/phpqrcode.php');
3. // 二维码数据
4. $data = 'http://bbs.it-home.org';
5. // 生成的文件名
6. $filename = '1111.png';
7. // 纠错级别：L、M、Q、H
8. $errorCorrectionLevel = 'L';
9. // 点的大小：1到10
10. $matrixPointSize = 4;
11. QRcode::png($data, $filename, $errorCorrectionLevel, $matrixPointSize, 2);

3，生成中间带logo的二维码

3. include('phpqrcode/phpqrcode.php');

4. $value='http://bbs.it-home.org';
5. $errorCorrectionLevel = 'L';
6. $matrixPointSize = 6;
7. QRcode::png($value, 'xiangyang.png', $errorCorrectionLevel, $matrixPointSize, 2);
8. echo "QR code generated"."
   ";
9. $logo = 'logo.png';
10. $QR = 'xiangyang.png';

11. if($logo !== FALSE)

12. {

13. $QR = imagecreatefromstring(file_get_contents($QR));

14. $logo = imagecreatefromstring(file_get_contents($logo));
15. $QR_width = imagesx($QR);
16. $QR_height = imagesy($QR);
17. $logo_width = imagesx($logo);
18. $logo_height = imagesy($logo);
19. $logo_qr_width = $QR_width / 5;
20. $scale = $logo_width / $logo_qr_width;
21. $logo_qr_height = $logo_height / $scale;
22. $from_width = ($QR_width - $logo_qr_width) / 2;
23. imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
24. }
25. imagepng($QR,'xiangyanglog.png');
26. ?>