PHP code to add Chinese watermark to pictures

Header("Content-type: image/png"); /*Notify the browser that an image is to be output*/
$im = imagecreate(400, 300); /*Define the image Size*/
$gray = ImageColorAllocate($im, 235, 235, 235);
$pink = ImageColorAllocate($im, 255, 128, 255);
$fontfile = "simkai.ttf";
/* $fontfile The path of the font, depending on the operating system, can be simhei.ttf (Heold), SIMKAI.TTF (Italic), SIMFANG.TTF (Imitation Song), SIMSUN.TTC (Song style & New Song style) and other Chinese fonts supported by GD*/
$str = iconv('GB2312','UTF-8','Chinese watermark'); /*Convert gb2312 character set to UTF-8 characters*/
ImageTTFText($im, 30, 0, 100, 200, $pink, $fontfile, $str);
/* Add Chinese watermark*/
Imagepng($im);
ImageDestroy($im);
?>

Example 2:

// ----------------------- //
// Function: Add text to pictures
// Parameters: $img image file name
// $new_img Save image file name, if empty means not to save the image
// $text string content
// text_size string size
// text_angle font string output angle
/ / text_x string output x coordinate
 // text_y string output y coordinate
 // $text_font font 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 ("Failed to open image!");
$color = ImageColorAllocate($im, $r,$g,$b);
//ImageTTFText(int im, int size, int angle, int x, int y, int col, string fontfile, string text):
//This function writes TTF (TrueType Fonts) font text into the image.
//Parameters: size is the size of the font;
// angle is the angle of the font, calculated clockwise, 0 degrees is horizontal (from left to right), 90 degrees is the text from bottom to top;
// The two parameters x and y are the coordinate values ​​of the text (the origin is the upper left corner);
// col is the color of the text;
// fontfile is the font file name;
// text is the string content.
ImageTTFText($im, $text_size, $text_angle, $text_x, $text_y, $color, $text_font, $text);
if ($new_img==""):
ImageGif($im); // Do not save Picture, only displayed
else:
ImageGif($im,$new_img); //Save the picture, but not displayed
endif;
ImageDestroy($im); //End the graphic and release memory space
}
?>

Example 3:

/*
* Function: PHP image watermark (watermark supports images or text)
* Parameters:
* $groundImage background image, that is, the image that needs to be watermarked, currently only supports GIF, JPG , PNG format;
* $waterPos watermark position, there are 10 states, 0 is a random position;
* 1 is top left, 2 is top center, 3 is top right;
* 4 is middle left, 5 is middle center. , 6 means the middle is on the right;
* 7 is on the bottom on the left, 8 is on the bottom in the center, 9 is on the bottom on the right;
* $waterImage image watermark, that is, the image used as the watermark, currently only supports GIF, JPG, and PNG formats ;
* $waterText text watermark, that is, text is used as a watermark, supports ASCII code, does not support Chinese;
* $textFont text size, the value is 1, 2, 3, 4 or 5, the default is 5;
* $textColor Text color, the value is a hexadecimal color value, the default is #FF0000 (red);
*
* Note: Support GD 2.0, Support FreeType, GIF Read, GIF Create, JPG, PNG
* $waterImage and $waterText are the most It is best not to use them at the same time, just choose one of them, and use $waterImage first.
* When $waterImage is valid, the parameters $waterString, $stringFont, and $stringColor are not valid.
* The file name of the watermarked image is the same as $groundImage.
* Author: longware @ 2004-11-3 14:15:13
*/
function imageWaterMark($groundImage,$waterPos=0,$waterImage=”",$waterText=””,$textFont=5,$textColor =”#FF0000″)
{
$isWaterImage = FALSE;
$formatMsg = “This file format is not supported yet. Please use image processing software to convert the image to GIF, JPG, or PNG format.”;
//Read watermark file
if(!emptyempty($waterImage) && file_exists($waterImage))
{
$isWaterImage = TRUE;
$water_info = getimagesize($waterImage);
$water_w = $water_info[ 0];//Get the width of the watermark image
$water_h = $water_info[1];//Get the height of the watermark image
switch($water_info[2])//Get the format of the watermark image
{
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];// Get the width of the background image
$ground_h = $ground_info[1];//Get the height of the background image
switch($ground_info[2])//Get the format of the background image
{
case 1:$ground_im = imagecreatefromgif($ groundImage);break;
case 2:$ground_im = imagecreatefromjpeg($groundImage);break;
case 3:$ground_im = imagecreatefrompng($groundImage);break;
default:die($formatMsg);
}
}
else
{
die("The picture that needs to be watermarked does not exist!");
}
//Watermark location
if($isWaterImage)//Picture watermark
{
$w = $water_w;
$h = $water_h;
$label = "Picture";
}
else//Text watermark
{
$temp = imagettfbbox(ceil($textFont*5),0,"./cour.ttf",$waterText);//Get The range of text using TrueType fonts
$w = $temp[2] - $temp[6];
$h = $temp[3] - $temp[7];
unset($temp);
$label = "Text area";
}
if( ($ground_w<$w) || ($ground_h<$h) )
{
echo "The length or width of the image that needs to be watermarked is longer than the watermark ".$label." Small, unable to generate watermark! ”;
return;
}
switch($waterPos)
{
case 0://random
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h));
break;
case 1://1 means top left
$posX = 0;
$posY = 0;
break;
case 2://2 means top center
$posX = ($ ground_w - $w) / 2;
$posY = 0;
break;
case 3://3 is top right
$posX = $ground_w - $w;
$posY = 0;
break;
case 4 ://4 means center left
$posX = 0;
$posY = ($ground_h - $h) / 2;
break;
case 5://5 means center center
$posX = ($ground_w - $w ) / 2;
$posY = ($ground_h - $h) / 2;
break;
case 6://6 is the middle right
$posX = $ground_w - $w;
$posY = ($ground_h - $h) / 2;
break;
case 7://7 means the bottom is on the left
$posX = 0;
$posY = $ground_h - $h;
break;
case 8://8 means the bottom is in the center
$posX = ($ground_w - $w) / 2;
$posY = $ground_h - $h;
break;
case 9://9 is bottom right
$posX = $ground_w - $w;
 $posY = $ground_h - $h;
break;
default://random
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h) );
break;
}
//Set the image blending mode
imagealphablending($ground_im, true);
if($isWaterImage)//Image watermark
{
imagecopy($ground_im, $water_im, $posX, $ posY, 0, 0, $water_w,$water_h);//Copy watermark to 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("The watermark text color format is incorrect!”);
}
imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B));
}
//生成水印后的图片
@unlink($groundImage);
switch($ground_info[2])//取得背景图片的格式
{
case 1:imagegif($ground_im,$groundImage);break;
case 2:imagejpeg($ground_im,$groundImage);break;
case 3:imagepng($ground_im,$groundImage);break;
default:die($errorMsg);
}
//释放内存
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], $uploadfile))
{
echo “OK”;
//文字水印
//imageWaterMark($uploadfile,5,”",”HTTP://www.lvye.info”,5,”#cccccc“);
//图片水印
$waterImage=”logo_ok1.gif”;//水印图片路径
imageWaterMark($uploadfile,9,$waterImage);
echo “”;
}
else
{
echo “Fail”;
}
}
}
}
?>

for($a=0;$a<$id;$a++){
echo “文件: ”;
}
?>

Example 4, add Chinese watermark:

/*--------------
**Description: This is used to add a bottom watermark to the specified image (does not occupy the image display area), you need to create an object call
**Note: 1. Requires gd library support and iconv support (php5 already includes it and does not need to be loaded)
2. Only suitable for three types of pictures, jpg/jpeg/gif /png, other types are not processed
3. Note that the attributes of the directory where the image is located must be writable
4. Calling 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 function:
-------------*/
class MyWaterDownChinese{
var $Path = "./"; //The relative path of the directory where the picture is located relative to the page that calls this class
var $FileName = ""; //The name of the picture, such as "1.jpg"
var $Text = ""; // The watermark text to be added to the picture supports Chinese
var $TextColor = "#ffffff"; //The color of the text. For gif pictures, the font color can only be black
var $TextBgColor = "#000000"; //The color of the text Color of the background bar
var $Font = "c://windows//fonts//simhei.ttf"; //Font storage directory, relative path
var $OverFlag = true; //Whether to overwrite the original image, default To overwrite, when not covering, automatically add "_water_down" after the original image file name, such as "1.jpg" => "1_water_down.jpg"
var $BaseWidth = 200; //The width of the image must be at least >=200 , the watermark text will be added.
//----------------
//Function: Class constructor (php5.0 or above)
//Parameters: None
//Return: None
function __construct(){;}
//---------------
//Function: Class destructor (php5.0 or above)
//Parameters: None
/ /Return: None
function __destruct(){;}
//-------------
//Function: Run the function on the object and add it to the picture Watermark
//Parameters: None
//Return: None
function Run()
{
if($this->FileName == "" || $this->Text == "")
return;
 //Check whether the GD library is installed
if(false == function_exists("gd_info"))
{
echo "The system does not have the GD library installed, so watermarks cannot be added to images.";
return;
}
//Set input, Output image path name
$arr_in_name = explode(".",$this->FileName);
//
$inImg = $this->Path.$this->FileName;
$outImg = $inImg;
$tmpImg = $this->Path.$arr_in_name[0]."_tmp.".$arr_in_name[1]; //Temporarily processed pictures, very important
if(!$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 ;
//Get Image properties
$groundImageType = @getimagesize($inImg);
$imgWidth = $groundImageType[0];
$imgHeight = $groundImageType[1];
$imgType = $groundImageType[2];
if($imgWidth < ; $this->BaseWidth) //If it is smaller than the basic width, it will not be processed
return;
//When the image is not jpg/jpeg/gif/png, it will not be processed
switch($imgType)
{
case 1:
$image = imagecreatefromgif($inImg);
$this->TextBgColor = "#ffffff"; //The font of the gif image can only be black, so the background color is set to white
break;
case 2:
$image = imagecreatefromjpeg( $inImg);
break;
case 3:
$image = imagecreatefrompng($inImg);
break;
default:
return;
break;
}
//Create 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 is increased by 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($this->TextBgColor ,5,2))); //Background color
//Fill the background color of the image
@imagefill ($objTmpImg,0,0,$colorBg);
//Copy the original image to the temporary image
@imagecopy( $objTmpImg,$image,0,0,0,0,$imgWidth,$imgHeight);
//Create a watermark text object to be written
$objText = $this->createText($this->Text) ;
//Calculate the position of the watermark text to be written
$x = 5;
$y = $newHeight-5;
//Write the text watermark
@imagettftext($objTmpImg,10,0,$x,$ y,$color,$this->Font,$objText);
//Generate new pictures, temporary pictures
switch($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($this->OverFlag)
{
//Overwrite the original image
@unlink($inImg);
 @rename($tmpImg,$outImg);
}
else
{
//Do not overwrite the original image
@rename($tmpImg,$outImg);
}
}
//------
/ /Function: Create watermark text object
//Parameters: None
//Return: 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
?>