php图片加水印与上传图片加水印类

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. ?>
30. method="post" name="upform">

    上传文件:

    
    

    允许上传的文件类型为:=implode(', ',$uptypes)?>
31. if ($_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 //检查文件大小
42. {
43. echo "文件太大!";
44. exit;
45. }
46. if(!in_array($file["type"], $uptypes))
47. //检查文件类型
48. {
49. echo "文件类型不符!".$file["type"];
50. exit;
51. }
52. if(!file_exists($destination_folder))
53. {
54. mkdir($destination_folder);
55. }
56. $filename=$file["tmp_name"];
57. $image_size = getimagesize($filename);
58. $pinfo=pathinfo($file["name"]);
59. $ftype=$pinfo['extension'];
60. $destination = $destination_folder.
61. time().".".$ftype;
62. if (file_exists($destination) &&
63. $overwrite != true)
64. {
65. echo "同名文件已经存在了";
66. exit;
67. }
68. if(!move_uploaded_file ($filename,
69. $destination))
70. {
71. echo "移动文件出错";
72. exit;
73. }
74. $pinfo=pathinfo($destination);
75. $fname=$pinfo[basename];
76. echo " 已经成功上传
77. 
    文件名:
78. ".$destination_folder.
79. $fname."

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

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