php实现中间带自定义图片的二维码

2. class QRCode{
3. public $w;
4. public $h;
5. public $s;
6. function __construct($w1,$h1,$s1){
7. $this->w = $w1;
8. $this->h = $h1;
9. $this->s = $s1;
10. $this->outimgase();
11. }
12. function qrcode(){
13. $post_data = array();
14. $post_data['cht'] = 'qr';
15. $post_data['chs'] = $this->w."x".$this->h;
16. $post_data['chl'] = $this->s;
17. $post_data['choe'] = "UTF-8";
18. $url = "http://chart.apis.google.com/chart";
19. $data_Array = array();
20. foreach($post_data as $key => $value)
21. {
22. $data_Array[] = $key.'='.$value;
23. }
24. $data = implode("&",$data_Array);
25. $ch = curl_init();
26. curl_setopt($ch, CURLOPT_POST, 1);
27. curl_setopt($ch, CURLOPT_HEADER, 0);
28. curl_setopt($ch, CURLOPT_URL, $url);
29. curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
30. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
31. $result = curl_exec($ch);
32. curl_close($ch);
33. return $result;
34. }
35. function outimgase(){
36. echo $this->qrcode();
37. }
38. }
39. header("Content-type:image/png");
40. $t = new QRCode(300,300,"tianxin");

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2，然后，通过一个php文件将二维码和你的目的图片画在一起。

3. $surl = $_POST["url"];

4. function GrabImage($url,$filename="") {
5. if($url==""):return false;endif;
6. if($filename=="") {
7. $ext=strrchr($url,".");
8. if($ext!=".gif" && $ext!=".jpg"):return false;endif;
9. $filename=date("dMYHis").$ext;
10. }
11. ob_start();
12. readfile($url);
13. $img = ob_get_contents();
14. ob_end_clean();
15. $size = strlen($img);
16. $fp2=@fopen($filename, "a");
17. fwrite($fp2,$img);
18. fclose($fp2);
19. return $filename;
20. }
21. $source = GrabImage("http://localhost/QRCode/QRCode.php","Myqrcode.png");
22. $water =GrabImage($surl,"t.png");
23. function getImageInfo($img){
24. $imageInfo = getimagesize($img);
25. if ($imageInfo !== false) {
26. $imageType = strtolower(substr(image_type_to_extension($imageInfo[2]), 1));
27. $imageSize = filesize($img);
28. $info = array(
29. "width" => $imageInfo[0],
30. "height" => $imageInfo[1],
31. "type" => $imageType,
32. "size" => $imageSize,
33. "mime" => $imageInfo['mime']
34. );
35. return $info;
36. } else {
37. return false;
38. }
39. }
40. function thumb($image, $thumbname, $type='', $maxWidth=200, $maxHeight=50, $interlace=true) {
41. // 获取原图信息
42. $info = getImageInfo($image);
43. if ($info !== false) {
44. $srcWidth = $info['width'];
45. $srcHeight = $info['height'];
46. $type = empty($type) ? $info['type'] : $type;
47. $type = strtolower($type);
48. $interlace = $interlace ? 1 : 0;
49. unset($info);
50. $scale = min($maxWidth / $srcWidth, $maxHeight / $srcHeight); // 计算缩放比例
51. if ($scale >= 1) {
52. // 超过原图大小不再缩略
53. $width = $srcWidth;
54. $height = $srcHeight;
55. } else {
56. // 缩略图尺寸
57. $width = (int) ($srcWidth * $scale);
58. $height = (int) ($srcHeight * $scale);
59. }
60. // 载入原图
61. $createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type);
62. $srcImg = $createFun($image);
63. //创建缩略图
64. if ($type != 'gif' && function_exists('imagecreatetruecolor'))
65. $thumbImg = imagecreatetruecolor($width, $height);
66. else
67. $thumbImg = imagecreate($width, $height);
68. // 复制图片
69. if (function_exists("ImageCopyResampled"))
70. imagecopyresampled($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
71. else
72. imagecopyresized($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
73. if ('gif' == $type || 'png' == $type) {
74. //imagealphablending($thumbImg, false);//取消默认的混色模式
75. //imagesavealpha($thumbImg,true);//设定保存完整的 alpha 通道信息
76. $background_color = imagecolorallocate($thumbImg, 0, 255, 0); // 指派一个绿色
77. imagecolortransparent($thumbImg, $background_color); // 设置为透明色，若注释掉该行则输出绿色的图
78. }
79. // 对jpeg图形设置隔行扫描
80. if ('jpg' == $type || 'jpeg' == $type)
81. imageinterlace($thumbImg, $interlace);

82. // 生成图片

83. $imageFun = 'image' . ($type == 'jpg' ? 'jpeg' : $type);
84. $imageFun($thumbImg, $thumbname);
85. imagedestroy($thumbImg);
86. imagedestroy($srcImg);
87. return $thumbname;
88. }
89. return false;
90. }
91. function water($source, $thumb, $savename="", $alpha=100){
92. //检查文件是否存在
93. if (!file_exists($source) || !file_exists($thumb))
94. return false;
95. //图片信息
96. $sInfo = getImageInfo($source);
97. $water = thumb($thumb,"wy.jpg","jpg",$sInfo["width"]/4,$sInfo["height"]/4);
98. $wInfo = getImageInfo($water);
99. //如果图片小于水印图片，不生成图片
100. if ($sInfo["width"] return false;
101. //建立图像
102. $sCreateFun = "imagecreatefrom" . $sInfo['type'];
103. $sImage = $sCreateFun($source);
104. $wCreateFun = "imagecreatefrom" . $wInfo['type'];
105. $wImage = $wCreateFun($water);
106. //设定图像的混色模式
107. imagealphablending($wImage, true);
108. //图像位置,默认为右下角右对齐
109. // $posY = $sInfo["height"] - $wInfo["height"];
110. // $posX = $sInfo["width"] - $wInfo["width"];
111. $posY = ($sInfo["height"] - $wInfo["height"])/2;
112. $posX = ($sInfo["width"] - $wInfo["width"])/2;
113. //生成混合图像
114. imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo['width'], $wInfo['height'], $alpha);
115. //输出图像
116. $ImageFun = 'Image' . $sInfo['type'];
117. //如果没有给出保存文件名，默认为原图像名
118. if (!$savename) {
119. $savename = $source;
120. @unlink($source);
121. }
122. //保存图像
123. $ImageFun($sImage, $savename);
124. imagedestroy($sImage);
125. }
126. water($source,$water);

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在上面的代码中用3个函数 GrabImage（）函数是将生成二维码的文件转化成图片 接下来的函数就是处理图片的缩放 将目的图片添加到二位上。

3，在来一个入口文件index.html 代码如下：

7. 注意提交的URL" method="post">

   中间可以自己定义图片的二维码生成器

   二维码要生的内容：
   希望能添加自己的图片地址：

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