- Header ("Content-type: image/png");/* notify the browser to output the image */
- $ Im = imagecreate (400,300);/* define the image size */
- $ Gray = ImageColorAllocate ($ im, 235,235,235 );
- $ Pink = ImageColorAllocate ($ im, 255,128,255 );
- $ Fontfile = "simkai. ttf ";
- /* $ 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 (& */
- $ Str = iconv ('gb2312', 'utf-8', 'Chinese watermark');/* convert the GB2312 character set to the character set of the UTF-8 */
- ImageTTFText ($ im, 30, 0,100,200, $ pink, $ fontfile, $ str );
- /* Add a Chinese watermark */
- Imagepng ($ im );
- ImageDestroy ($ im );
- ?>
Example 2: php image watermark code.
- //************************************** **//
- // Function: add text to the image
- // Parameter: $ img image file name
- // $ New_img saves another image file name. if it is null, it means no other image is saved.
- // $ Text string content
- // Text_size string size
- // Text_angle font string output angle
- // Output x coordinate of text_x string
- // Output y coordinate from text_y string
- // $ Text_font-shaped file name
- // $ R, $ g, $ B string color RGB value
- //************************************** **//
- Function img_text ($ img, $ new_img, $ text, $ text_size, $ text_angle, $ text_x, $ text_y, $ text_font, $ r, $ g, $ B ){
- $ Text = iconv ("gb2312", "UTF-8", $ text );
- Header ("Content-type: image/gif ");
- $ Im = @ imagecreatefromstring (file_get_contents ($ img) or die ("Opening the image failed! ");
- $ Color = ImageColorAllocate ($ im, $ r, $ g, $ B );
- // ImageTTFText (int im, int size, int angle, int x, int y, int col, string fontfile, string text ):
- // This function writes TTF (TrueType Fonts) text to an image.
- // Parameter: the size is the font size;
- // 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;
- // The x and y parameters are the coordinate values of the text (the origin is the upper left corner );
- // Col indicates the color of the word;
- // Fontfile is the font file name;
- // Text is the string content.
- ImageTTFText ($ im, $ text_size, $ text_angle, $ text_x, $ text_y, $ color, $ text_font, $ text );
- If ($ new_img = ""):
- ImageGif ($ im); // do not save the image, only show
- Else:
- ImageGif ($ im, $ new_img); // save the image but it is not displayed
- Endif;
- ImageDestroy ($ im); // ends the image and releases the memory space.
- }
- ?>
Example 3: php image watermark, which supports the php text watermark effect.
- /*
- * Function: PHP image watermark (watermarks support images or text)
- * Parameters:
- * $ GroundImage: specifies the background image to be Watermark. Currently, only GIF, JPG, and PNG formats are supported;
- * $ WaterPos watermark position, which has 10 statuses. 0 indicates a random position;
- * 1 is the top left, 2 is the top center, and 3 is the top right;
- * 4: center left, 5: center, and 6: center right;
- * 7 indicates that the bottom is left, 8 indicates that the bottom is center, and 9 indicates that the bottom is right;
- * $ WaterImage: specifies the image Watermark. Currently, only the GIF, JPG, and PNG formats are supported;
- * $ WaterText text watermark: uses text as a watermark. it supports ASCII codes and does not support Chinese characters;
- * $ TextFont text size. The value is 1, 2, 3, 4, or 5. the default value is 5;
- * $ TextColor text color. The value is a hexadecimal color value. The default value is # FF0000 (red );
- *
- * Note: Support GD 2.0, Support FreeType, GIF Read, GIF Create, JPG, and PNG
- * $ WaterImage and $ waterText should not be used at the same time. select one of them and use $ waterImage first.
- * When $ waterImage is valid, $ waterString, $ stringFont, and $ stringColor are invalid.
- * The name of the watermark image is the same as that of $ groundImage.
- * Author: longware @ 2004-11-3 14:15:13
- */
- Function imageWaterMark ($ groundImage, $ waterPos = 0, $ waterImage = "", $ waterText = "", $ textFont = 5, $ textColor = "# FF0000 ″)
- {
- $ IsWaterImage = FALSE;
- $ FormatMsg = "this file format is not supported Currently. use image processing software to convert images to GIF, JPG, and PNG formats .";
- // Read the watermark file
- If (! Emptyempty ($ waterImage) & file_exists ($ waterImage ))
- {
- $ IsWaterImage = TRUE;
- $ Water_info = getimagesize ($ waterImage );
- $ Water_w = $ water_info [0]; // Obtain the watermark image width.
- $ Water_h = $ water_info [1]; // Get the watermark image height
- Switch ($ water_info [2]) // Obtain the watermark image format
- {
- Case 1: $ water_im = imagecreatefromgif ($ waterImage); break;
- Case 2: $ water_im = imagecreatefromjpeg ($ waterImage); break;
- Case 3: $ water_im = imagecreatefrompng ($ waterImage); break;
- Default: die ($ formatMsg );
- }
- }
- // Read the background image
- If (! Emptyempty ($ groundImage) & file_exists ($ groundImage ))
- {
- $ Ground_info = getimagesize ($ groundImage );
- $ Ground_w = $ ground_info [0]; // Obtain the width of the background image.
- $ Ground_h = $ ground_info [1]; // get the height of the background image
- Switch ($ ground_info [2]) // Obtain the background image format
- {
- Case 1: $ ground_im = imagecreatefromgif ($ groundImage); break;
- Case 2: $ ground_im = imagecreatefromjpeg ($ groundImage); break;
- Case 3: $ ground_im = imagecreatefrompng ($ groundImage); break;
- Default: die ($ formatMsg );
- }
- }
- Else
- {
- Die ("the image to be watermarked does not exist !");
- }
- // Watermark Position
- If ($ isWaterImage) // image watermark
- {
- $ W = $ water_w;
- $ H = $ water_h;
- $ Label = "image ";
- }
- Else // text watermark
- {
- $ Temp = imagettfbbox (ceil ($ textFont * 5), 0, "./cour. ttf", $ waterText); // get the text range using the TrueType font
- $ W = $ temp [2]-$ temp [6];
- $ H = $ temp [3]-$ temp [7];
- Unset ($ temp );
- $ Label = "text area ";
- }
- If ($ ground_w <$ w) | ($ ground_h <$ h ))
- {
- Echo "the length or width of the image to be watermarked is smaller than that of the watermark". $ label. ", the watermark cannot be generated !";
- Return;
- }
- Switch ($ waterPos)
- {
- Case 0: // random
- $ PosX = rand (0, ($ ground_w-$ w ));
- $ PosY = rand (0, ($ ground_h-$ h ));
- Break;
- Case 1: // 1 is the top left
- $ PosX = 0;
- $ PosY = 0;
- Break;
- Case 2: // 2 center the top
- $ PosX = ($ ground_w-$ w)/2;
- $ PosY = 0;
- Break;
- Case 3: // 3: top right
- $ PosX = $ ground_w-$ w;
- $ PosY = 0;
- Break;
- Case 4: // 4 is left in the middle
- $ PosX = 0;
- $ PosY = ($ ground_h-$ h)/2;
- Break;
- Case 5: // 5 center in the middle
- $ PosX = ($ ground_w-$ w)/2;
- $ PosY = ($ ground_h-$ h)/2;
- Break;
- Case 6: // 6 is the center and right
- $ PosX = $ ground_w-$ w;
- $ PosY = ($ ground_h-$ h)/2;
- Break;
- Case 7: // 7 is left at the bottom
- $ PosX = 0;
- $ PosY = $ ground_h-$ h;
- Break;
- Case 8: // 8 is centered at the bottom
- $ PosX = ($ ground_w-$ w)/2;
- $ PosY = $ ground_h-$ h;
- Break;
- Case 9: // 9: right
- $ PosX = $ ground_w-$ w;
- $ PosY = $ ground_h-$ h;
- Break;
- Default: // random
- $ PosX = rand (0, ($ ground_w-$ w ));
- $ PosY = rand (0, ($ ground_h-$ h ));
- Break;
- }
- // Set the mixed color mode of the image
- Imagealphablending ($ ground_im, true );
- If ($ isWaterImage) // image watermark
- {
- Imagecopy ($ ground_im, $ water_im, $ posX, $ posY, 0, 0, $ water_w, $ water_h); // Copy the watermark to the target file
- }
- Else // text watermark
- {
- If (! Emptyempty ($ textColor) & (strlen ($ textColor) = 7 ))
- {
- $ R = hexdec (substr ($ textColor, 1, 2 ));
- $ G = hexdec (substr ($ textColor, 3, 2 ));
- $ B = hexdec (substr ($ textColor, 5 ));
- }
- Else
- {
- Die ("incorrect watermark text color format !");
- }
- Imagestring ($ ground_im, $ textFont, $ posX, $ posY, $ waterText, imagecolorallocate ($ ground_im, $ R, $ G, $ B ));
- }
- // The image after the watermark is generated
- @ Unlink ($ groundImage );
- Switch ($ ground_info [2]) // Obtain the background image format
- {
- Case 1: imagegif ($ ground_im, $ groundImage); break;
- Case 2: imagejpeg ($ ground_im, $ groundImage); break;
- Case 3: imagepng ($ ground_im, $ groundImage); break;
- Default: die ($ errorMsg );
- }
- // Release the memory
- If (isset ($ water_info) unset ($ water_info );
- If (isset ($ water_im) imagedestroy ($ water_im );
- Unset ($ ground_info );
- Imagedestroy ($ ground_im );
- }
- //-----------------------------
- $ Id = $ _ REQUEST ['id'];
- $ Num = count ($ _ FILES ['userfile'] ['name']);
- Print_r ($ _ FILES ['userfile']);
- Print_r ($ _ FILES ['userfile'] ['name']);
- Echo $ num;
- Echo"
";
- If (isset ($ id )){
- For ($ I = 0; $ I <$ id; $ I ++ ){
- If (isset ($ _ FILES )&&! Emptyempty ($ _ FILES ['userfile']) & $ _ FILES ['userfile'] ['size']> 0)
- {
- $ Uploadfile = "./". time (). "_". $ _ FILES ['userfile'] [name] [$ I];
- Echo"
";
- Echo $ uploadfile;
- If (copy ($ _ FILES ['userfile'] ['tmp _ name'] [$ I], $ uploadfile ))
- {
- Echo "OK
";
- // Text watermark
- // ImageWaterMark ($ uploadfile, 5, "", "HTTP: // www.lvye.info", 5, "# cccccc");
- // Image watermark
- Watermark waterimage##logo_ok1.gif "; // watermark image path
- ImageWaterMark ($ uploadfile, 9, $ waterImage );
- Echo "";
- }
- Else
- {
- Echo "Fail
";
- }
- }
- }
- }
- ?>
Code 4 adds a Chinese watermark
- /*-----
- ** 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.
- ** Creation: 2007-10-09
- ** Updated: 2007-10-09
- ** Note: 1. the gd Library is required and iconv is required (php5 already contains and does not need to be loaded)
- 2. only applicable to three types of images: jpg, jpeg, gif, and png. do not process other types of images.
- 3. Note that the attribute of the image directory must be writable.
- 4. call example:
- $ ObjImg = new MyWaterDownChinese ();
- $ ObjImg-> Path = "images /";
- $ ObjImg-> FileName = "1.jpg ";
- $ ObjImg-> Text = "HAHAKONGJIANHTTP: // HI. BAIDU. COM/LYSONCN ";
- $ ObjImg-> Font = "./font/simhei. ttf ";
- $ ObjImg-> Run ();
- ** Member functions:
- --------------*/
- Class MyWaterDownChinese {
- Var $ Path = "./"; // relative Path of the image directory to the page that calls this class
- Var $ FileName = ""; // The name of the image, for example, JPG"
- Var $ Text = ""; // The watermark Text to be added to the image. Chinese characters are supported.
- Var $ TextColor = "# ffffff"; // text color. the font color must be black when the GIF image is used.
- Var $ TextBgColor = "#000000"; // The color of the text background bar
- Var $ Font = "c: // windows // fonts // simhei. ttf"; // Directory for storing fonts, relative path
- 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"
- Var $ BaseWidth = 200; // The watermark text is added only when the image width is greater than or equal to 200.
- //--------------
- // Function: constructor of the class (php5.0 or above)
- // Parameter: None
- // Return: None
- Function _ construct (){;}
- //------------------------
- // Function: class destructor (php5.0 or above)
- // Parameter: None
- // Return: None
- Function _ destruct (){;}
- //----------------------
- // Function: run the object function and add a watermark to the image.
- // Parameter: None
- // Return: None
- Function Run ()
- {
- If ($ this-> FileName = "" | $ this-> Text = "")
- Return;
- // Check whether the GD Library is installed
- If (false = function_exists ("gd_info "))
- {
- Echo "the GD library is not installed in the system, and watermarks cannot be added to images .";
- Return;
- }
- // Set the input and output image pathnames
- $ Arr_in_name = explode (".", $ this-> FileName );
- //
- $ InImg = $ this-> Path. $ this-> FileName;
- $ OutImg = $ inImg;
- $ TmpImg = $ this-> Path. $ arr_in_name [0]. "_ tmp.". $ arr_in_name [1]; // temporarily processed image, very important
- If (! $ This-> OverFlag)
- $ OutImg = $ this-> Path. $ arr_in_name [0]. "_ water_down.". $ arr_in_name [1];
- // Check whether the image exists
- If (! File_exists ($ inImg ))
- Return;
- // Obtain Image attributes
- $ GroundImageType = @ getimagesize ($ inImg );
- $ ImgWidth = $ groundImageType [0];
- $ ImgHeight = $ groundImageType [1];
- $ ImgType = $ groundImageType [2];
- If ($ imgWidth <$ this-> BaseWidth) // smaller than the basic width, not processed
- Return;
- // When the image is not jpg/jpeg/gif/png, it is not processed
- Switch ($ imgType)
- {
- Case 1:
- $ Image = imagecreatefromgif ($ inImg );
- $ This-> TextBgColor = "# ffffff"; // The GIF image font can only be black, so the background color is white.
- Break;
- Case 2:
- $ Image = imagecreatefromjpeg ($ inImg );
- Break;
- Case 3:
- $ Image = imagecreatefrompng ($ inImg );
- Break;
- Default:
- Return;
- Break;
- }
- // Create a color
- $ Color = @ imagecolorallocate ($ image, hexdec (substr ($ this-> TextColor, 1, 2), hexdec (substr ($ this-> TextColor, 3, 2 )), hexdec (substr ($ this-> TextColor, 5, 2); // text color
- // Generate an empty image. its height increases the watermark height at the bottom.
- $ NewHeight = $ imgHeight + 20;
- $ ObjTmpImg = @ imagecreatetruecolor ($ imgWidth, $ newHeight );
- $ ColorBg = @ imagecolorallocate ($ objTmpImg, hexdec (substr ($ this-> TextBgColor, 1, 2), hexdec (substr ($ this-> TextBgColor, 3, 2 )), hexdec (substr ($ this-> TextBgColor, 5, 2); // background color
- // Fill in the background color of the image
- @ Imagefill ($ objTmpImg, 0, 0, $ colorBg );
- // Copy the source image to the temporary Image
- @ Imagecopy ($ objTmpImg, $ image, 0, 0, 0, $ imgWidth, $ imgHeight );
- // Create the watermark text object to be written
- $ ObjText = $ this-> createText ($ this-> Text );
- // Calculate the position of the watermark text to be written
- $ X = 5;
- $ Y = $ newHeight-5;
- // Write a text watermark
- @ Imagettftext ($ objTmpImg, 10, 0, $ x, $ y, $ color, $ this-> Font, $ objText );
- // Generate a new image and a temporary Image
- Switch ($ imgType)
- {
- Case 1:
- Imagegif ($ objTmpImg, $ tmpImg );
- Break;
- Case 2:
- Imagejpeg ($ objTmpImg, $ tmpImg );
- Break;
- Case 3:
- Imagepng ($ objTmpImg, $ tmpImg );
- Break;
- Default:
- Return;
- Break;
- }
- // Release resources
- @ Imagedestroy ($ objTmpImg );
- @ Imagedestroy ($ image );
- // Rename the file
- If ($ this-> OverFlag)
- {
- // Overwrite the source image
- @ Unlink ($ inImg );
- @ Rename ($ tmpImg, $ outImg );
- }
- Else
- {
- // Do not overwrite the source image
- @ Rename ($ tmpImg, $ outImg );
- }
- }
- //----------
- // Function: Create a watermark text object
- // Parameter: None
- // Return: the created watermark text object.
- Function createText ($ instring)
- {
- $ Outstring = "";
- $ Max = strlen ($ instring );
- For ($ I = 0; $ I <$ max; $ I ++)
- {
- $ H = ord ($ instring [$ I]);
- If ($ h >=160 & $ I <$ MAX-1)
- {
- $ Outstring. = "&#". base_convert (bin2hex (iconv ("gb2312", "UCS-2", substr ($ instring, $ I, 2), 16, 10 ). ";";
- $ I ++;
- }
- Else
- {
- $ Outstring. = $ instring [$ I];
- }
- }
- Return $ outstring;
- }
- } // Class
- ?>
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