Php image and Chinese watermark implementation code sharing

Php image and Chinese watermark implementation code sharing Example 1
The code is as follows:
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
The code is as follows:
//************************************** **//
// 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
The code is as follows:
/*
* 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
The code is as follows:
Add 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 = "HAHAKONGJIAN [url] HTTP: // HI. BAIDU. COM/LYSONCN [/url]";
$ 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
?>