php 给图片加上文字水印代码

$image=$_get[id];
$im=getimagesize($image);
//print_r($im);
//以下是读取文字的宽高
$font='verdana.ttf';//字体
$font_size = $im[0]/20;//文字大小
$size=imagettfbbox($font_size,0,$font,'111cn.net');//文字宽高
$textwidth = $size [4];//取出宽
$textheight = abs( $size [7] );//取出高

$pic_w=abs(($im[0]-$textwidth)/2);//文字存放宽的位置
$pic_h=abs(($im[1]-$textheight)/2);//文字存放高的位置

 switch($im[2])               
{
case 1:
$im=imagecreatefromgif($image);
break;

case 2:
$im=imagecreatefromjpeg($image);
break;

case 3:
$im=imagecreatefrompng($image);
break;
}
//$logo="2.png";//商标图片
//$ing=getimagesize($logo);
//
// switch($ing[2])               
//
//{
//case 1:
//$in=imagecreatefromgif($logo);
//break;
//
//case 2:
//$in=imagecreatefromjpeg($logo);
//break;
//
//case 3:
//$in=imagecreatefrompng($logo);
//break;
//}
//imagecopy($im,$in,200,3,0,0,'120','110');//图片合并
 $te = imagecolorclosestalpha($im,255,255,255,60);//最后一个数值是透明度越大越透明
$str=iconv("gbk","utf-8","111cn.net"); //设置文字的内容和编码，很简单吧

imagettftext($im,$font_size,0,$pic_w,$pic_h,$te,'verdana.ttf',$str);

header("content-type: image/jpeg");
imagejpeg($im);

class upfile {
 public $filepath = "www.111cn.net/"; //上传文件存放文件夹

 public $filesize = 1000000; //允许上传的大小

 //如果要修改允许上传文件的类型  请搜索 【 switch ($upfiletype) { //文件类型  】

 public $reimagesize = array (
  true, //是否生成缩略图
  400, //缩略图宽
  300,//缩略图高
  "" //缩略图存放文件夹 如果为空和当前要生成缩略图的文件在同一目录 文件前缀r_
 ); //是否生成缩略图 array(生成或不生成，缩略图宽,缩略图高,存放文件夹); 注意：存放文件夹后跟 '/'

 public $india = true; //是否打水印 true打 false不打

 public $indiaimage = ""; //水印图片地址为空则不打图片水印 如果有文字水印建议不要开启图片水印

 public $indiaimagex = 100; //图片距离图片左边距离

 public $indiaimagey = 10; //图片距离图片上面距离

 public $indiatext = "www.111cn.net"; //水印文字

 public $fontsize = 6; //水印文字大小,1最小6最大

 public $indiatextx = 10; //文字距离图片左边距离

 public $indiatexty = 10; //文字距离图片上面距离

 public $r = 250; //图片颜色三原色 $r红

 public $g = 250; //$g绿

 public $b = 250; //$b蓝

 public $indiapath = ""; //加了水印的图片保存路径,如果为空就直接替代原来的图片

 //开始上传处理
 function uploadfile($upfile) {
  if ($upfile == "") {
   die("uploadfile:参数不足");
  }
  if (!file_exists($this->filepath)) {
   mkdir($this->filepath);
  }
  $upfiletype = $upfile['type'];
  $upfilesize = $upfile['size'];
  $upfiletmpname = $upfile['tmp_name'];
  $upfilename = $upfile['name'];
  $upfileerror = $upfile['error'];
  if ($upfilesize > $this->filesize) {
   return false; //文件过大
  }
  switch ($upfiletype) { //文件类型
   case 'image/jpeg' :
    $type = 'jpg';
    break;
   case 'image/pjpeg' :
    $type = 'jpg';
    break;
   case 'image/png' :
    $type = 'png';
    break;
   case 'image/gif' :
    $type = 'gif';
    break;
  }
  if (!isset ($type)) {
   return false; //不支持此类型
  }
  if (!is_uploaded_file($upfiletmpname) or !is_file($upfiletmpname)) {
   return false;
   ; //文件不是经过正规上传的;
  }
  if ($this->upfileerror != 0) {
   return false; //其他错误
  }
  if ($this->upfileerror == 0) {
   if (!file_exists($upfiletmpname)) {
    return false; //临时文件不存在
   } else {
    $filename = date("ymdhis", time() + 3600 * 8); //图片已当前时间命名
    $filename = $this->filepath . $filename . "." . $type;
    if (!move_uploaded_file($upfiletmpname, $filename)) {
     return false; //文件在移动中丢失
    } else {
     if ($this->india == true) {
      $this->goindia($filename, $type,true);
     } else {
      if ($this->reimagesize[0] == true) {
       $this->goreimagesize($filename, $type);
      } else {
       return true; //上传成功!
       unlink($upfiletmpname);
      }
     }
    }

   }
  }

 }
 //添加水印处理
 function goindia($filename, $filetype,$reimage=false) {
  if (!file_exists($filename)) {
   $this->reerror(7); //要添加水印的文件不存在
  } else {
   if ($filetype == "jpg") {
    $im = imagecreatefromjpeg($filename);
   } else
    if ($filetype == "gif") {
     $im = imagecreatefromgif($filename);
    } else
     if ($filetype == "png") {
      $im = imagecreatefrompng($filename);
     }
   if ($this->indiatext != "") { //如果水印文字不为空
    $textcolor = imagecolorallocate($im, $this->r, $this->g, $this->b); //设置文字颜色
    imagestring($im, $this->fontsize, $this->indiatextx, $this->indiatexty, $this->indiatext, $textcolor); //将文字写入图片
   }
   if ($this->indiaimage != "") {//如果水印图片不为空
    $indiaimagetype = getimagesize($this->indiaimage);
    $logow = $indiaimagetype[0]; //得到水印图片的宽
    $logoh = $indiaimagetype[1]; //得到水印图片的高
    switch ($indiaimagetype[2]) { //判断水印图片的格式
     case 1 :
      $indiaimagetype = "gif";
      $logo = imagecreatefromgif($this->indiaimage);
      break;
     case 2 :
      $indiaimagetype = "jpg";
      $logo = imagecreatefromjpeg($this->indiaimage);
      break;
     case 3 :
      $indiaimagetype = "png";
      $logo = imagecreatefrompng($this->indiaimage);
      break;
    }
    imagealphablending($im, true); //打开混色模式
    imagecopy($im, $logo, $this->indiaimagex, $this->indiaimagey, 0, 0, $logow, $logoh);
    imagedestroy($im);
    imagedestroy($logo);
   }
  }
  if ($this->indiapath == "") { //如果水印存放地址不为空
   if ($filetype == "jpg") {
    imagejpeg($im, $filename);
   } else
    if ($filetype == "gif") {
     imagegif($im, $filename);
    } else
     if ($filetype == "png") {
      imagepng($im, $filename);
     }
   if($reimage == true){
    $this->goreimagesize($filename,$filetype);
   }else{
    return true; //添加水印成功
   }
  } else {
   if (!file_exists($this->indiapath)) {
    mkdir($this->indiapath);
    return false; //请重新上传
   } else {
    $indianame = basename($filename);
    $indianame = $this->indiapath . $indianame;
    if ($filetype == "jpg") {
     imagejpeg($im, $indianame);
    } else
     if ($filetype == "gif") {
      imagegif($im, $indianame);
     } else
      if ($filetype == "png") {
       imagepng($im, $indianame);
      }
    if($reimage == true){
     $this->goreimagesize($indianame,$filetype);
     echo $indianame;
    }else{
     return true; //添加水印成功
    }
   }
  }
 }
 function goreimagesize($filename, $filetype) {
  if (!file_exists($filename)) {
   return false; //要生成缩略图的图片不存在
  } else {
   if ($filetype == 'jpg') {
    $reimage = imagecreatefromjpeg($filename);
   }
   elseif ($filetype == 'png') {
    $reimage = imagecreatefrompng($filename);
   } else
    if ($filetype == 'gif') {
     $reimage = imagecreatefromgif($filename);
    }
   if (isset ($reimage)) {
    $srcimagetype = getimagesize($filename);
    $srcimagetypew = $srcimagetype[0]; //得到原始图片宽度
    $srcimagetypeh = $srcimagetype[1]; //得到原始图片高度
    $reim = imagecreatetruecolor($this->reimagesize[1], $this->reimagesize[2]);
    imagecopyresized($reim, $reimage, 0, 0, 0, 0, $this->reimagesize[1], $this->reimagesize[2], $srcimagetypew, $srcimagetypeh);
    $reimagepath = $this->reimagesize[3];
    if ($reimagepath != "") { //如果存放水印地址不为空
     if (!file_exists($reimagepath)) {
      mkdir($reimagepath);
     } else {
      $reimagename = basename($filename);
      $reimagename = $reimagepath . "r_" . $reimagename;
      if ($filetype == "gif")
       imagegif($reim, $reimagename);
      else
       if ($filetype == "jpg")
        imagejpeg($reim, $reimagename);
       else
        if ($filetype == "png")
         imagepng($reim, $reimagename);
      return true;
     }
    } else {
     $filename = basename($filename);
     if($this->indiapath == ""){
      $filename = $this->filepath."r_" . $filename;
     }else{
      $filename = $this->indiapath."r_" . $filename;
     }
     if ($filetype == "gif")
      imagegif($reim, $filename);
     else
      if ($filetype == "jpg")
       imagejpeg($reim, $filename);
      else
       if ($filetype == "png")
        imagepng($reim, $filename);
     return true;
    }

   }
  }
 }

}
if ($_post["submit"]) {
 $file = $_files['uploadfile'];
 $upfile = new upfile();
 echo $upfile->uploadfile($file);
}
?>

  <form action="" method="post" enctype="multipart/form-data">
  <input type="file" name="uploadfile"/><br/>
  <input type="submit" value="上传" name="submit"/>
  </form>

class chart{

var $a; //椭圆长半轴
var $b; //椭圆短半轴
var $DataArray;  //每个扇形的数据
var $ColorArray; //每个扇形的颜色 要求按照十六进制书写但前面不加0x
//为边缘及阴影为黑色

function chart($pa=100,$pb=60,$sData="100,200,300,400,500,300", $sColor="ee00ff,dd0000,cccccc,ccff00,00ccff,ccff00")
{
    $this->a=$pa;
    $this->b=$pb;
    $this->DataArray=split(",",$sData);
    $this->ColorArray=split(",",$sColor);
}

function setA($v){
    $this->a=$v;
}

function getA(){
    return $this->a;
}

function setB($v){
    $this->b=$v; 
}

function getB(){
    return $this->b;
}

function setDataArray($v){
    $this->DataArray=split(",",$v);
}

function getDataArray($v){
    return $this->DataArray;
}

function setColorArray($v){
    $this->ColorArray=split(",",$v);
}

function getColorArray(){
    return  $this->ColorArray;
}

 
function  DrawPie(){
    $image=imagecreate($this->a*2+40,$this->b*2+40);
    $PieCenterX=$this->a+10;
    $PieCenterY=$this->b+10;
    $DoubleA=$this->a*2;
    $DoubleB=$this->b*2;
    list($R,$G,$B)=getRGB(0);
    $colorBorder=imagecolorallocate($image,$R,$G,$B);
    $DataNumber=count($this->DataArray);
    
    //$DataTotal
    for($i=0;$i<$DataNumber;$i++)      $DataTotal+=$this->DataArray[$i]; //算出数据和
    
    //填充背境
    imagefill($image, 0, 0, imagecolorallocate($image, 0xFF, 0xFF, 0xFF));

    /*
    ** 画每一个扇形
    */
    $Degrees = 0;
    for($i = 0; $i < $DataNumber; $i++){
        $StartDegrees = round($Degrees);
        $Degrees += (($this->DataArray[$i]/$DataTotal)*360);
        $EndDegrees = round($Degrees);
        $percent = number_format($this->DataArray[$i]/$DataTotal*100, 1); 
        list($R,$G,$B)=getRGB(hexdec($this->ColorArray[$i]));
        $CurrentColor=imagecolorallocate($image,$R,$G,$B);
        if ($R>60 and $R<256)            $R=$R-60;
        if ($G>60 and $G<256)            $G=$G-60;
        if ($B>60 and $B<256)            $B=$B-60;
        $CurrentDarkColor=imagecolorallocate($image,$R,$G,$B);
        //画扇形弧
        imagearc($image,$PieCenterX,$PieCenterY,$DoubleA,$DoubleB,$StartDegrees,$EndDegrees,$CurrentColor);
        //画直线
        list($ArcX, $ArcY) = pie_point($StartDegrees , $this->a , $this->b);
        imageline($image,$PieCenterX,$PieCenterY,floor($PieCenterX + $ArcX),floor($PieCenterY + $ArcY),$CurrentColor);
        //画直线
        list($ArcX, $ArcY) = pie_point($EndDegrees,$this->a , $this->b);
        imageline($image,$PieCenterX,$PieCenterY,ceil($PieCenterX + $ArcX),ceil($PieCenterY + $ArcY),$CurrentColor);
        //填充扇形
        $MidPoint = round((($EndDegrees - $StartDegrees)/2) + $StartDegrees);
        list($ArcX, $ArcY) = Pie_point($MidPoint, $this->a*3/4 , $this->b*3/4);
        
        imagefilltoborder($image,floor($PieCenterX + $ArcX),floor($PieCenterY + $ArcY), $CurrentColor,$CurrentColor);
        imagestring($image,2,floor($PieCenterX + $ArcX-5),floor($PieCenterY + $ArcY-5),$percent."%",$colorBorder);

        //画阴影
        if ($StartDegrees>=0 and $StartDegrees<=180){
           if($EndDegrees<=180){    
               for($k = 1; $k < 15; $k++)
                imagearc($image,$PieCenterX, $PieCenterY+$k,$DoubleA, $DoubleB, $StartDegrees, $EndDegrees, $CurrentDarkColor);
           }else{
               for($k = 1; $k < 15; $k++)
                imagearc($image,$PieCenterX, $PieCenterY+$k,$DoubleA, $DoubleB, $StartDegrees, 180, $CurrentDarkColor);
           }

        }
   }
        
    /*到此脚本已经生了一幅图像了
    **现在需要的是把它发到浏览器上，重要的一点是要将标头发给浏览器，让它知道是一个GIF文件。不然的话你只能看到一堆奇怪的乱码
    */ 
    //输出生成的图片    
    header("Content-type: image/gif");
    imagegif($image);
    imagedestroy($image);
}//End drawPie()
}//End class

//实现

$objp = new chart();
$objp->DrawPie();