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Php code for adding a Chinese watermark to an image

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Php code for adding a Chinese watermark to an image

  2. Header ("Content-type: image/png");/* notify the browser to output the image */
  3. $ Im = imagecreate (400,300);/* define the image size */
  4. $ Gray = ImageColorAllocate ($ im, 235,235,235 );
  5. $ Pink = ImageColorAllocate ($ im, 255,128,255 );
  6. $ Fontfile = "simkai. ttf ";
  7. /* $ Fontfile font path, depending on the operating system, can be simhei. ttf (), SIMKAI. TTF (entity body), SIMFANG. TTF (Imitation Song), SIMSUN. chinese fonts supported by GD, such as TTC (& */
  8. $ Str = iconv ('gb2312', 'utf-8', 'Chinese watermark');/* convert the GB2312 character set to the character set of the UTF-8 */
  9. ImageTTFText ($ im, 30, 0,100,200, $ pink, $ fontfile, $ str );
  10. /* Add a Chinese watermark */
  11. Imagepng ($ im );
  12. ImageDestroy ($ im );
  13. ?>

Example 2:

  2. //-----------------------//
  3. // Function: add text to the image
  4. // Parameter: $ img image file name
  5. // $ New_img saves another image file name. if it is null, it means no other image is saved.
  6. // $ Text string content
  7. // Text_size string size
  8. // Text_angle font string output angle
  9. // Output x coordinate of text_x string
  10. // Output y coordinate from text_y string
  11. // $ Text_font-shaped file name
  12. // $ R, $ g, $ B string color RGB value
  13. //-------------------------//
  14. Function img_text ($ img, $ new_img, $ text, $ text_size, $ text_angle, $ text_x, $ text_y, $ text_font, $ r, $ g, $ B ){
  15. $ Text = iconv ("gb2312", "UTF-8", $ text );
  16. Header ("Content-type: image/gif ");
  17. $ Im = @ imagecreatefromstring (file_get_contents ($ img) or die ("Opening the image failed! ");
  18. $ Color = ImageColorAllocate ($ im, $ r, $ g, $ B );
  19. // ImageTTFText (int im, int size, int angle, int x, int y, int col, string fontfile, string text ):
  20. // This function writes TTF (TrueType Fonts) text to an image.
  21. // Parameter: the size is the font size;
  22. // Angle is the font angle, which is calculated clockwise. 0 degrees is horizontal (from left to right), and 90 degrees is the bottom-to-top text;
  23. // The x and y parameters are the coordinate values of the text (the origin is the upper left corner );
  24. // Col indicates the color of the word;
  25. // Fontfile is the font file name;
  26. // Text is the string content.
  27. ImageTTFText ($ im, $ text_size, $ text_angle, $ text_x, $ text_y, $ color, $ text_font, $ text );
  28. If ($ new_img = ""):
  29. ImageGif ($ im); // do not save the image, only show
  30. Else:
  31. ImageGif ($ im, $ new_img); // save the image but it is not displayed
  32. Endif;
  33. ImageDestroy ($ im); // ends the image and releases the memory space.
  34. }
  35. ?>

Example 3:

  2. /*
  3. * Function: PHP image watermark (watermarks support images or text)
  4. * Parameters:
  5. * $ GroundImage: specifies the background image to be Watermark. Currently, only GIF, JPG, and PNG formats are supported;
  6. * $ WaterPos watermark position, which has 10 statuses. 0 indicates a random position;
  7. * 1 is the top left, 2 is the top center, and 3 is the top right;
  8. * 4: center left, 5: center, and 6: center right;
  9. * 7 indicates that the bottom is left, 8 indicates that the bottom is center, and 9 indicates that the bottom is right;
  10. * $ WaterImage: specifies the image Watermark. Currently, only the GIF, JPG, and PNG formats are supported;
  11. * $ WaterText text watermark: uses text as a watermark. it supports ASCII codes and does not support Chinese characters;
  12. * $ TextFont text size. The value is 1, 2, 3, 4, or 5. the default value is 5;
  13. * $ TextColor text color. The value is a hexadecimal color value. The default value is # FF0000 (red );
  14. *
  15. * Note: Support GD 2.0, Support FreeType, GIF Read, GIF Create, JPG, and PNG
  16. * $ WaterImage and $ waterText should not be used at the same time. select one of them and use $ waterImage first.
  17. * When $ waterImage is valid, $ waterString, $ stringFont, and $ stringColor are invalid.
  18. * The name of the watermark image is the same as that of $ groundImage.
  19. * Author: longware @ 2004-11-3 14:15:13
  20. */
  21. Function imageWaterMark ($ groundImage, $ waterPos = 0, $ waterImage = "", $ waterText = "", $ textFont = 5, $ textColor = "# FF0000 ″)
  22. {
  23. $ IsWaterImage = FALSE;
  24. $ FormatMsg = "this file format is not supported Currently. use image processing software to convert images to GIF, JPG, and PNG formats .";
  25. // Read the watermark file
  26. If (! Emptyempty ($ waterImage) & file_exists ($ waterImage ))
  27. {
  28. $ IsWaterImage = TRUE;
  29. $ Water_info = getimagesize ($ waterImage );
  30. $ Water_w = $ water_info [0]; // Obtain the watermark image width.
  31. $ Water_h = $ water_info [1]; // Get the watermark image height
  32. Switch ($ water_info [2]) // Obtain the watermark image format
  33. {
  34. Case 1: $ water_im = imagecreatefromgif ($ waterImage); break;
  35. Case 2: $ water_im = imagecreatefromjpeg ($ waterImage); break;
  36. Case 3: $ water_im = imagecreatefrompng ($ waterImage); break;
  37. Default: die ($ formatMsg );
  38. }
  39. }
  40. // Read the background image
  41. If (! Emptyempty ($ groundImage) & file_exists ($ groundImage ))
  42. {
  43. $ Ground_info = getimagesize ($ groundImage );
  44. $ Ground_w = $ ground_info [0]; // Obtain the width of the background image.
  45. $ Ground_h = $ ground_info [1]; // get the height of the background image
  46. Switch ($ ground_info [2]) // Obtain the background image format
  47. {
  48. Case 1: $ ground_im = imagecreatefromgif ($ groundImage); break;
  49. Case 2: $ ground_im = imagecreatefromjpeg ($ groundImage); break;
  50. Case 3: $ ground_im = imagecreatefrompng ($ groundImage); break;
  51. Default: die ($ formatMsg );
  52. }
  53. }
  54. Else
  55. {
  56. Die ("the image to be watermarked does not exist !");
  57. }
  58. // Watermark Position
  59. If ($ isWaterImage) // image watermark
  60. {
  61. $ W = $ water_w;
  62. $ H = $ water_h;
  63. $ Label = "image ";
  64. }
  65. Else // text watermark
  66. {
  67. $ Temp = imagettfbbox (ceil ($ textFont * 5), 0, "./cour. ttf", $ waterText); // get the text range using the TrueType font
  68. $ W = $ temp [2]-$ temp [6];
  69. $ H = $ temp [3]-$ temp [7];
  70. Unset ($ temp );
  71. $ Label = "text area ";
  72. }
  73. If ($ ground_w <$ w) | ($ ground_h <$ h ))
  74. {
  75. Echo "the length or width of the image to be watermarked is smaller than that of the watermark". $ label. ", the watermark cannot be generated !";
  76. Return;
  77. }
  78. Switch ($ waterPos)
  79. {
  80. Case 0: // random
  81. $ PosX = rand (0, ($ ground_w-$ w ));
  82. $ PosY = rand (0, ($ ground_h-$ h ));
  83. Break;
  84. Case 1: // 1 is the top left
  85. $ PosX = 0;
  86. $ PosY = 0;
  87. Break;
  88. Case 2: // 2 center the top
  89. $ PosX = ($ ground_w-$ w)/2;
  90. $ PosY = 0;
  91. Break;
  92. Case 3: // 3: top right
  93. $ PosX = $ ground_w-$ w;
  94. $ PosY = 0;
  95. Break;
  96. Case 4: // 4 is left in the middle
  97. $ PosX = 0;
  98. $ PosY = ($ ground_h-$ h)/2;
  99. Break;
  100. Case 5: // 5 center in the middle
  101. $ PosX = ($ ground_w-$ w)/2;
  102. $ PosY = ($ ground_h-$ h)/2;
  103. Break;
  104. Case 6: // 6 is the center and right
  105. $ PosX = $ ground_w-$ w;
  106. $ PosY = ($ ground_h-$ h)/2;
  107. Break;
  108. Case 7: // 7 is left at the bottom
  109. $ PosX = 0;
  110. $ PosY = $ ground_h-$ h;
  111. Break;
  112. Case 8: // 8 is centered at the bottom
  113. $ PosX = ($ ground_w-$ w)/2;
  114. $ PosY = $ ground_h-$ h;
  115. Break;
  116. Case 9: // 9: right
  117. $ PosX = $ ground_w-$ w;
  118. $ PosY = $ ground_h-$ h;
  119. Break;
  120. Default: // random
  121. $ PosX = rand (0, ($ ground_w-$ w ));
  122. $ PosY = rand (0, ($ ground_h-$ h ));
  123. Break;
  124. }
  125. // Set the mixed color mode of the image
  126. Imagealphablending ($ ground_im, true );
  127. If ($ isWaterImage) // image watermark
  128. {
  129. Imagecopy ($ ground_im, $ water_im, $ posX, $ posY, 0, 0, $ water_w, $ water_h); // Copy the watermark to the target file
  130. }
  131. Else // text watermark
  132. {
  133. If (! Emptyempty ($ textColor) & (strlen ($ textColor) = 7 ))
  134. {
  135. $ R = hexdec (substr ($ textColor, 1, 2 ));
  136. $ G = hexdec (substr ($ textColor, 3, 2 ));
  137. $ B = hexdec (substr ($ textColor, 5 ));
  138. }
  139. Else
  140. {
  141. Die ("incorrect watermark text color format !");
  142. }
  143. Imagestring ($ ground_im, $ textFont, $ posX, $ posY, $ waterText, imagecolorallocate ($ ground_im, $ R, $ G, $ B ));
  144. }
  145. // The image after the watermark is generated
  146. @ Unlink ($ groundImage );
  147. Switch ($ ground_info [2]) // Obtain the background image format
  148. {
  149. Case 1: imagegif ($ ground_im, $ groundImage); break;
  150. Case 2: imagejpeg ($ ground_im, $ groundImage); break;
  151. Case 3: imagepng ($ ground_im, $ groundImage); break;
  152. Default: die ($ errorMsg );
  153. }
  154. // Release the memory
  155. If (isset ($ water_info) unset ($ water_info );
  156. If (isset ($ water_im) imagedestroy ($ water_im );
  157. Unset ($ ground_info );
  158. Imagedestroy ($ ground_im );
  159. }
  160. //-----------------------------
  161. $ Id = $ _ REQUEST ['id'];
  162. $ Num = count ($ _ FILES ['userfile'] ['name']);
  163. Print_r ($ _ FILES ['userfile']);
  164. Print_r ($ _ FILES ['userfile'] ['name']);
  165. Echo $ num;
  166. Echo"
    ";
  167. If (isset ($ id )){
  168. For ($ I = 0; $ I <$ id; $ I ++ ){
  169. If (isset ($ _ FILES )&&! Emptyempty ($ _ FILES ['userfile']) & $ _ FILES ['userfile'] ['size']> 0)
  170. {
  171. $ Uploadfile = "./". time (). "_". $ _ FILES ['userfile'] [name] [$ I];
  172. Echo"
    ";
  173. Echo $ uploadfile;
  174. If (copy ($ _ FILES ['userfile'] ['tmp _ name'] [$ I], $ uploadfile ))
  175. {
  176. Echo "OK
    ";
  177. // Text watermark
  178. // ImageWaterMark ($ uploadfile, 5, "", "HTTP: // www.lvye.info", 5, "# cccccc");
  179. // Image watermark
  180. Watermark waterimage##logo_ok1.gif "; // watermark image path
  181. ImageWaterMark ($ uploadfile, 9, $ waterImage );
  182. Echo "";
  183. }
  184. Else
  185. {
  186. Echo "Fail
    ";
  187. }
  188. }
  189. }
  190. }
  191. ?>

Example 4: Add a Chinese Watermark:

  3. /*--------------

  4. ** Description: This is a custom class used to add a bottom watermark (not occupying the image display area) to a specified image. you need to create an object to call this class.
  5. ** Note: 1. the gd Library is required and iconv is required (php5 already contains and does not need to be loaded)
  6. 2. only applicable to three types of images: jpg, jpeg, gif, and png. do not process other types of images.
  7. 3. Note that the attribute of the image directory must be writable.
  8. 4. call example:
  9. $ ObjImg = new MyWaterDownChinese ();
  10. $ ObjImg-> Path = "images /";
  11. $ ObjImg-> FileName = "1.jpg ";
  12. $ ObjImg-> Text = "HAHAKONGJIAN [url] HTTP: // HI. BAIDU. COM/LYSONCN [/url]";
  13. $ ObjImg-> Font = "./font/simhei. ttf ";
  14. $ ObjImg-> Run ();
  15. ** Member functions:
  16. -------------*/
  17. Class MyWaterDownChinese {
  18. Var $ Path = "./"; // relative Path of the image directory to the page that calls this class
  19. Var $ FileName = ""; // The name of the image, for example, JPG"
  20. Var $ Text = ""; // The watermark Text to be added to the image. Chinese characters are supported.
  21. Var $ TextColor = "# ffffff"; // text color. the font color must be black when the GIF image is used.
  22. Var $ TextBgColor = "#000000"; // The color of the text background bar
  23. Var $ Font = "c: // windows // fonts // simhei. ttf"; // Directory for storing fonts, relative path
  24. Var $ OverFlag = true; // specifies whether to overwrite the source image. if the source image is not overwritten by default, the system automatically adds "_ water_down" after the source image file name, for example, “1.jpg "=>" 1_water_down.jpg"
  25. Var $ BaseWidth = 200; // The watermark text is added only when the image width is greater than or equal to 200.
  26. //----------------
  27. // Function: constructor of the class (php5.0 or above)
  28. // Parameter: None
  29. // Return: None
  30. Function _ construct (){;}
  31. //---------------
  32. // Function: class destructor (php5.0 or above)
  33. // Parameter: None
  34. // Return: None
  35. Function _ destruct (){;}
  36. //-------------

  37. // Function: run the object function and add a watermark to the image.

  38. // Parameter: None
  39. // Return: None
  40. Function Run ()
  41. {
  42. If ($ this-> FileName = "" | $ this-> Text = "")
  43. Return;
  44. // Check whether the GD Library is installed
  45. If (false = function_exists ("gd_info "))
  46. {
  47. Echo "the GD library is not installed in the system, and watermarks cannot be added to images .";
  48. Return;
  49. }
  50. // Set the input and output image pathnames
  51. $ Arr_in_name = explode (".", $ this-> FileName );
  52. //
  53. $ InImg = $ this-> Path. $ this-> FileName;
  54. $ OutImg = $ inImg;
  55. $ TmpImg = $ this-> Path. $ arr_in_name [0]. "_ tmp.". $ arr_in_name [1]; // temporarily processed image, very important
  56. If (! $ This-> OverFlag)
  57. $ OutImg = $ this-> Path. $ arr_in_name [0]. "_ water_down.". $ arr_in_name [1];
  58. // Check whether the image exists
  59. If (! File_exists ($ inImg ))
  60. Return;
  61. // Obtain Image attributes
  62. $ GroundImageType = @ getimagesize ($ inImg );
  63. $ ImgWidth = $ groundImageType [0];
  64. $ ImgHeight = $ groundImageType [1];
  65. $ ImgType = $ groundImageType [2];
  66. If ($ imgWidth <$ this-> BaseWidth) // smaller than the basic width, not processed
  67. Return;
  68. // When the image is not jpg/jpeg/gif/png, it is not processed
  69. Switch ($ imgType)
  70. {
  71. Case 1:
  72. $ Image = imagecreatefromgif ($ inImg );
  73. $ This-> TextBgColor = "# ffffff"; // The GIF image font can only be black, so the background color is white.
  74. Break;
  75. Case 2:
  76. $ Image = imagecreatefromjpeg ($ inImg );
  77. Break;
  78. Case 3:
  79. $ Image = imagecreatefrompng ($ inImg );
  80. Break;
  81. Default:
  82. Return;
  83. Break;
  84. }
  85. // Create a color
  86. $ Color = @ imagecolorallocate ($ image, hexdec (substr ($ this-> TextColor, 1, 2), hexdec (substr ($ this-> TextColor, 3, 2 )), hexdec (substr ($ this-> TextColor, 5, 2); // text color
  87. // Generate an empty image. its height increases the watermark height at the bottom.
  88. $ NewHeight = $ imgHeight + 20;
  89. $ ObjTmpImg = @ imagecreatetruecolor ($ imgWidth, $ newHeight );
  90. $ ColorBg = @ imagecolorallocate ($ objTmpImg, hexdec (substr ($ this-> TextBgColor, 1, 2), hexdec (substr ($ this-> TextBgColor, 3, 2 )), hexdec (substr ($ this-> TextBgColor, 5, 2); // background color
  91. // Fill in the background color of the image
  92. @ Imagefill ($ objTmpImg, 0, 0, $ colorBg );
  93. // Copy the source image to the temporary Image
  94. @ Imagecopy ($ objTmpImg, $ image, 0, 0, 0, $ imgWidth, $ imgHeight );
  95. // Create the watermark text object to be written
  96. $ ObjText = $ this-> createText ($ this-> Text );
  97. // Calculate the position of the watermark text to be written
  98. $ X = 5;
  99. $ Y = $ newHeight-5;
  100. // Write a text watermark
  101. @ Imagettftext ($ objTmpImg, 10, 0, $ x, $ y, $ color, $ this-> Font, $ objText );
  102. // Generate a new image and a temporary Image
  103. Switch ($ imgType)
  104. {
  105. Case 1:
  106. Imagegif ($ objTmpImg, $ tmpImg );
  107. Break;
  108. Case 2:
  109. Imagejpeg ($ objTmpImg, $ tmpImg );
  110. Break;
  111. Case 3:
  112. Imagepng ($ objTmpImg, $ tmpImg );
  113. Break;
  114. Default:
  115. Return;
  116. Break;
  117. }
  118. // Release resources
  119. @ Imagedestroy ($ objTmpImg );
  120. @ Imagedestroy ($ image );
  121. // Rename the file
  122. If ($ this-> OverFlag)
  123. {
  124. // Overwrite the source image
  125. @ Unlink ($ inImg );
  126. @ Rename ($ tmpImg, $ outImg );
  127. }
  128. Else
  129. {
  130. // Do not overwrite the source image
  131. @ Rename ($ tmpImg, $ outImg );
  132. }
  133. }
  134. //-------
  135. // Function: Create a watermark text object
  136. // Parameter: None
  137. // Return: the created watermark text object.
  138. Function createText ($ instring)
  139. {
  140. $ Outstring = "";
  141. $ Max = strlen ($ instring );
  142. For ($ I = 0; $ I <$ max; $ I ++)
  143. {
  144. $ H = ord ($ instring [$ I]);
  145. If ($ h >=160 & $ I <$ MAX-1)
  146. {
  147. $ Outstring. = "&#". base_convert (bin2hex (iconv ("gb2312", "UCS-2", substr ($ instring, $ I, 2), 16, 10 ). ";";
  148. $ I ++;
  149. }
  150. Else
  151. {
  152. $ Outstring. = $ instring [$ I];
  153. }
  154. }
  155. Return $ outstring;
  156. }
  157. } // Class
  158. ?>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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