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php实现中间带自定义图片的二维码

程序员文章站 2022-04-24 15:32:27
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  1. class QRCode{
  2. public $w;
  3. public $h;
  4. public $s;
  5. function __construct($w1,$h1,$s1){
  6. $this->w = $w1;
  7. $this->h = $h1;
  8. $this->s = $s1;
  9. $this->outimgase();
  10. }
  11. function qrcode(){
  12. $post_data = array();
  13. $post_data['cht'] = 'qr';
  14. $post_data['chs'] = $this->w."x".$this->h;
  15. $post_data['chl'] = $this->s;
  16. $post_data['choe'] = "UTF-8";
  17. $url = "http://chart.apis.google.com/chart";
  18. $data_Array = array();
  19. foreach($post_data as $key => $value)
  20. {
  21. $data_Array[] = $key.'='.$value;
  22. }
  23. $data = implode("&",$data_Array);
  24. $ch = curl_init();
  25. curl_setopt($ch, CURLOPT_POST, 1);
  26. curl_setopt($ch, CURLOPT_HEADER, 0);
  27. curl_setopt($ch, CURLOPT_URL, $url);
  28. curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
  29. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  30. $result = curl_exec($ch);
  31. curl_close($ch);
  32. return $result;
  33. }
  34. function outimgase(){
  35. echo $this->qrcode();
  36. }
  37. }
  38. header("Content-type:image/png");
  39. $t = new QRCode(300,300,"tianxin");
复制代码

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。

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

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

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

  1. 中间可以自己定义图片的二维码生成器_bbs.it-home.org
  2. 注意提交的URL" method="post">
  3. 中间可以自己定义图片的二维码生成器

  4. 二维码要生的内容:
  5. 希望能添加自己的图片地址:
  • 复制代码