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用来给图片加水印的PHP类

Jun 13, 2016 pm 12:29 PM
phpcodeFunctionaddparameterpicturecopysupportletterwatermarkuseofkind

复制代码 代码如下:


/*   
* 功能:PHP图片水印 (水印支持图片或文字)   
* 参数:   
*     $groundImage   背景图片,即需要加水印的图片,暂只支持GIF,JPG,PNG格式;   
*     $waterPos     水印位置,有10种状态,0为随机位置;   
*                 1为顶端居左,2为顶端居中,3为顶端居右;   
*                 4为中部居左,5为中部居中,6为中部居右;   
*                 7为底端居左,8为底端居中,9为底端居右;   
*     $waterImage     图片水印,即作为水印的图片,暂只支持GIF,JPG,PNG格式;   
*     $waterText     文字水印,即把文字作为为水印,支持ASCII码,不支持中文;   
*     $textFont     文字大小,值为1、2、3、4或5,默认为5;   
*     $textColor     文字颜色,值为十六进制颜色值,默认为#FF0000(红色);   
*   
* 注意:Support GD 2.0,Support FreeType、GIF Read、GIF Create、JPG 、PNG   
*     $waterImage 和 $waterText 最好不要同时使用,选其中之一即可,优先使用 $waterImage。   
*     当$waterImage有效时,参数$waterString、$stringFont、$stringColor均不生效。   
*     加水印后的图片的文件名和 $groundImage 一样。   
* 作者:longware @ 2004-11-3 14:15:13   
*/   
function imageWaterMark($groundImage,$waterPos=0,$waterImage=”",$waterText=”",$textFont=5,$textColor=”#FF0000″)    
{    
  $isWaterImage = FALSE;    
  $formatMsg = “暂不支持该文件格式,请用图片处理软件将图片转换为GIF、JPG、PNG格式。”;    

  //读取水印文件    
  if(!emptyempty($waterImage) && file_exists($waterImage))    
  {    
    $isWaterImage = TRUE;    
    $water_info = getimagesize($waterImage);    
    $water_w   = $water_info[0];//取得水印图片的宽    
    $water_h   = $water_info[1];//取得水印图片的高    

    switch($water_info[2])//取得水印图片的格式    
    {    
        case 1:$water_im = imagecreatefromgif($waterImage);break;    
        case 2:$water_im = imagecreatefromjpeg($waterImage);break;    
        case 3:$water_im = imagecreatefrompng($waterImage);break;    
        default:die($formatMsg);    
    }    
  }    

  //读取背景图片    
  if(!emptyempty($groundImage) && file_exists($groundImage))    
  {    
    $ground_info = getimagesize($groundImage);    
    $ground_w   = $ground_info[0];//取得背景图片的宽    
    $ground_h   = $ground_info[1];//取得背景图片的高    

    switch($ground_info[2])//取得背景图片的格式    
    {    
        case 1:$ground_im = imagecreatefromgif($groundImage);break;    
        case 2:$ground_im = imagecreatefromjpeg($groundImage);break;    
        case 3:$ground_im = imagecreatefrompng($groundImage);break;    
        default:die($formatMsg);    
    }    
  }    
  else   
  {    
    die(”需要加水印的图片不存在!”);    
  }    

  //水印位置    
  if($isWaterImage)//图片水印    
  {    
    $w = $water_w;    
    $h = $water_h;    
    $label = “图片的”;    
  }    
  else//文字水印    
  {    
    $temp = imagettfbbox(ceil($textFont*5),0,”./cour.ttf”,$waterText);//取得使用 TrueType 字体的文本的范围    
    $w = $temp[2] - $temp[6];    
    $h = $temp[3] - $temp[7];    
    unset($temp);    
    $label = “文字区域”;    
  }    
  if( ($ground_w  {    
    echo “需要加水印的图片的长度或宽度比水印”.$label.”还小,无法生成水印!”;    
    return;    
  }    
  switch($waterPos)    
  {    
    case 0://随机    
        $posX = rand(0,($ground_w - $w));    
        $posY = rand(0,($ground_h - $h));    
        break;    
    case 1://1为顶端居左    
        $posX = 0;    
        $posY = 0;    
        break;    
    case 2://2为顶端居中    
        $posX = ($ground_w - $w) / 2;    
        $posY = 0;    
        break;    
    case 3://3为顶端居右    
        $posX = $ground_w - $w;    
        $posY = 0;    
        break;    
    case 4://4为中部居左    
        $posX = 0;    
        $posY = ($ground_h - $h) / 2;    
        break;    
    case 5://5为中部居中    
        $posX = ($ground_w - $w) / 2;    
        $posY = ($ground_h - $h) / 2;    
        break;    
    case 6://6为中部居右    
        $posX = $ground_w - $w;    
        $posY = ($ground_h - $h) / 2;    
        break;    
    case 7://7为底端居左    
        $posX = 0;    
        $posY = $ground_h - $h;    
        break;    
    case 8://8为底端居中    
        $posX = ($ground_w - $w) / 2;    
        $posY = $ground_h - $h;    
        break;    
    case 9://9为底端居右    
        $posX = $ground_w - $w;    
        $posY = $ground_h - $h;    
        break;    
    default://随机    
        $posX = rand(0,($ground_w - $w));    
        $posY = rand(0,($ground_h - $h));    
        break;      
  }    

  //设定图像的混色模式    
  imagealphablending($ground_im, true);    

  if($isWaterImage)//图片水印    
  {    
    imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷贝水印到目标文件          
  }    
  else//文字水印    
  {    
    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(”水印文字颜色格式不正确!”);    
    }    
    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
  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 “用来给图片加水印的PHP类”;    
  }    
  else   
  {    
    echo “Fail
”;    
  }    
}    
 }    
}    

?>    

    
for($a=0;$a echo “文件: 
”;    

}    
?>    
    
    
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