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php图片加水印与上传图片加水印类

时间：2021-07-01 10:21:17 帮助过：26人阅读

  2. //上传文件类型列表
  3. $uptypes=array(
  4. 'image/jpg',
  5. 'image/jpeg',
  6. 'image/png',
  7. 'image/pjpeg',
  8. 'image/gif',
  9. 'image/bmp',
  10. 'image/x-png'
  11. );
  12. $max_file_size=2000000; //上传文件大小限制, 单位BYTE
  13. $destination_folder="uploadimg/"; //上传文件路径
  14. $watermark=1; //是否附加水印(1为加水印,其他为不加水印);
  15. $watertype=1; //水印类型(1为文字,2为图片)
  16. $waterposition=1; //水印位置(1为左下角,2为右下角
  17. ,3为左上角,4为右上角,5为居中);
  18. $waterstring="
  19. http://www.xplore.cn/"; //水印字符串
  20. $waterimg="xplore.gif"; //水印图片
  21. $imgpreview=1; //是否生成预览图(1为生成,其他为不生成);
  22. $imgpreviewsize=1/2; //缩略图比例
  23. ?>
  26. ZwelL图片上传程序
  31. if ($_SERVER['REQUEST_METHOD'] == 'POST')
  32. {
  33. if (!is_uploaded_file($_FILES["upfile"]
  34. [tmp_name]))
  35. //是否存在文件
  36. {
  37. echo "图片不存在!";
  38. exit;
  39. }
  40. $file = $_FILES["upfile"];
  41. if($max_file_size <$file["size"])
  42. //检查文件大小
  43. {
  44. echo "文件太大!";
  45. exit;
  46. }
  47. if(!in_array($file["type"], $uptypes))
  48. //检查文件类型
  49. {
  50. echo "文件类型不符!".$file["type"];
  51. exit;
  52. }
  53. if(!file_exists($destination_folder))
  54. {
  55. mkdir($destination_folder);
  56. }
  57. $filename=$file["tmp_name"];
  58. $image_size = getimagesize($filename);
  59. $pinfo=pathinfo($file["name"]);
  60. $ftype=$pinfo['extension'];
  61. $destination = $destination_folder.
  62. time().".".$ftype;
  63. if (file_exists($destination) &&
  64. $overwrite != true)
  65. {
  66. echo "同名文件已经存在了";
  67. exit;
  68. }
  69. if(!move_uploaded_file ($filename,
  70. $destination))
  71. {
  72. echo "移动文件出错";
  73. exit;
  74. }
  75. $pinfo=pathinfo($destination);
  76. $fname=$pinfo[basename];
  77. echo " 已经成功上传

  78. 文件名:
  79. ".$destination_folder.
  80. $fname."
    ";
  81. echo " 宽度:".$image_size[0];
  82. echo " 长度:".$image_size[1];
  83. echo "
    大小:".$file["size"]." bytes";
  84. if($watermark==1)
  85. {
  86. $iinfo=getimagesize($destination,$iinfo);
  87. $nimage=imagecreatetruecolor($image_size[0]
  88. ,$image_size[1]);
  89. $white=imagecolorallocate($nimage,255,255,255);
  90. $black=imagecolorallocate($nimage,0,0,0);
  91. $red=imagecolorallocate($nimage,255,0,0);
  92. imagefill($nimage,0,0,$white);
  93. switch ($iinfo[2])
  94. {
  95. case 1:
  96. $simage =imagecreatefromgif($destination);
  97. break;
  98. case 2:
  99. $simage =imagecreatefromjpeg($destination);
  100. break;
  101. case 3:
  102. $simage =imagecreatefrompng($destination);
  103. break;
  104. case 6:
  105. $simage =imagecreatefromwbmp($destination);
  106. break;
  107. default:
  108. die("不支持的文件类型");
  109. exit;
  110. }
  111. imagecopy($nimage,$simage,0,0,0,0,
  112. $image_size[0],$image_size[1]);
  113. imagefilledrectangle($nimage,1,
  114. $image_size[1]-15,80,$image_size[1],$white);
  115. switch($watertype)
  116. {
  117. case 1: //加水印字符串
  118. imagestring($nimage,2,3,$image_size[1]-15,
  119. $waterstring,$black);
  120. break;
  121. case 2: //加水印图片
  122. $simage1 =imagecreatefromgif("xplore.gif");
  123. imagecopy($nimage,$simage1,0,0,0,0,85,15);
  124. imagedestroy($simage1);
  125. break;
  126. }
  127. switch ($iinfo[2])
  128. {
  129. case 1:
  130. //imagegif($nimage, $destination);
  131. imagejpeg($nimage, $destination);
  132. break;
  133. case 2:
  134. imagejpeg($nimage, $destination);
  135. break;
  136. case 3:
  137. imagepng($nimage, $destination);
  138. break;
  139. case 6:
  140. imagewbmp($nimage, $destination);
  141. //imagejpeg($nimage, $destination);
  142. break;
  143. }
  144. //覆盖原上传文件
  145. imagedestroy($nimage);
  146. imagedestroy($simage);
  147. }
  148. if($imgpreview==1)
  149. {
  150. echo "
    图片预览:
    ";
  151. echo "height=".($image_size[1]*$imgpreviewsize);"
  152. echo " alt=\"图片预览:\r文件名:".
  153. $destination."\r上传时间:\" />";
  154. }
  155. }
  156. ?>

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