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/*
- * 功能:PHP圖片浮水印(水印支援圖片或文字)
- * 參數:
- * $groundImage 背景圖片,即需要加浮水印的圖片,暫只支援GIF,JPG,PNG格式;
- * $waterPos 水印位置,有10種狀態,0為隨機位置;
- * 1為頂端居左,2為頂端居中,3為頂端居右;
- * 4為中部居左,5為中部居中,6為中部居右;
- * 7為底端居左,8為底端居中,9為底端居右;
- * $waterImage 圖片浮水印,即作為浮水印的圖片,暫只支援GIF,JPG,PNG格式;
- * $waterText 文字浮水印,即把文字作為為浮水印,支援ASCII碼,不支援中文;
- * $textFont 文字大小,值為1、2、3、4或5,預設為5;
- * $textColor 文字顏色,值為十六進位顏色值,預設為#FF0000(紅色);
- *
- * 注意:Support GD 2.0,Support FreeType、GIF Read、GIF Create、JPG 、PNG
- * $waterImage 和$waterText 最好不要同時使用,選其中一個即可,優先使用$waterImage。
- * 當$waterImage有效時,參數$waterString、$stringFont、$stringColor皆不生效。
- * 加浮水印後的圖片的檔案名稱和 $groundImage 一樣。
- * 作者:longware
- */
- function imageWaterMark($groundImage,$waterPos=9,$waterImage=”",$waterText=”",$textFont=5,$textColor=”#FF0000″ )
- {
- $isWaterImage = FALSE;
- $formatMsg = 「暫不支援此檔案格式,請用圖片處理軟體將圖片轉換為GIF、JPG、PNG格式。”;
- //讀取水印檔案
- if(!empty($waterImage) && file_exists($waterImage))
- {
- $isWaterImage = TRUE;
- $water_info = getimagesize($isWaterImage = TR$;
- $water_info = getimagesize( waterImage);
- $water_w = $water_info[0];//取得水印圖片的寬
- $water_h = $water_info[1];//取得水印圖片的高
- switch($water_info[2 ])//取得浮水印圖片的格式
- {
- case 1:$water_im = imagecreatefromgif($waterImage);break;
- case 2:$water_im = imagecreatefromjpeg($waterImage);break;
- case 3:$water_im = imagecreatefrompng($waterImage);break;
- default:die($formatMsg);
- }
- }
- //讀取背景圖片
- if(!empty( $groundImage) && file_exists($groundImage))
- {
- $ground_info = getimagesize($groundImage);
- $ground_w = $ground_info[0];//取得背景圖片的寬度
- $ground_w = $ground_info[0];//取得背景圖片的寬度
- $ground_h = $ground_info[1];//取得背景圖片的高
- switch($ground_info[2])//取得背景圖片的格式
- {
- case 1:$ground_im = imagecreatefromgif($groundImage) ;break;
- case 2:$ground_im = imagecreatefromjpeg($groundImage);break;
- case 3:$ground_im = imagecreatefrompng($groundImage);break;
- breakault:die($formatMsg);
- }
- }
- else
- {
- die(“需要加浮水印的圖片不存在!”);
- }
- //水印位置
- if($isWaterImage) //圖片浮水印
- {
- $w = $water_w;
- $h = $water_h;
- $label = 「圖片的」;
- }
- else//文字浮水印
- {
- $temp = imagettfbbox(ceil($textFont*2.5),0,”simfang.ttf”,$waterText);//取得使用TrueType 字型的文字的範圍
- $w = $temp[ 2] – $temp[6];
- $h = $temp[3] – $temp[7];
- unset($temp);
- $label = 「文字區域」;
- }
- if( ($ground_w{
- echo 「需要加水印的圖片的長度或寬度比水印」.$label.」還小,無法生成浮水印! 」;
- return;
- }
- switch($waterPos)
- {
- case 0://隨機
- $posX = rand(0,($ground_w – $w)) ;
- $posY = rand(0,($ground_h – $h));
- break;
- case 1://1為頂端居左
- $posX = 0;
- $posY = 0;
- break;
- case 2://2為頂端居中
- $posX = ($ground_w – $w) / 2;
- $posY = 0;
- break;
- case 3://3為頂端居右
- $posX = $ground_w – $w;
- $posY = 0;
- break;
- case 4://4為中部居左
- $posX = 0;
- $posY = ($ground_h – $h) / 2;
- break;
- case 5://5為中部居中
- $posX = ($ground_w – $w) / 2;
- $posY = ($ground_h – $h) / 2;
- break;
- case 6://6為中部居右
- $posX = $ground_w – $ w;
- $posY = ($ground_h – $h) / 2;
- break;
- case 7://7為底端居左
- $posX = 0;
- $posY = $ground_h – $h;
- break;
- case 8://8為底端居中
- $posX = ($ground_w – $w) / 2;
- $posY = $ground_h – $ h;
- break;
- case 9://9為底端居右邊
- $posX = $ground_w – $w;
- $posY = $ground_h – $h;
- break;
- default://隨機
- $posX = rand(0,($ground_w – $w));
- $posY = rand(0,($ground_h – $h));
- break ;
- }
- //設定影像的混色模式
- imagealphablending($ground_im, true);
- if($isWaterImage)//圖片浮水印
- {
- imagecopy($ground_imagecopy($ground_imagecopy($ground_imagecopy($ground_imagecopy($ground_imagecopy($ground_imagecopy($ground_imagecopy($ground_image) , $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷貝水印到目標檔案
- }
- else//文字浮水印
- {
- if( ! empty($textColor) && (strlen($textColor)==7) )
- {
- $R = hexdec(substr($textColor,1,2));
- $G = hexdec(substr( $textColor,3,2));
- $B = hexdec(substr($textColor,5));
- }
- else
- {
- die(「水印文字顏色格式不正確! ”);
- }
- //$waterText=iconv('utf-8′,'gbk',$waterText);
- imagestring ( $ground_im, $textFont, $posX, $posY, $waterText , imagecolorallocate($ground_im, $R, $G, $B));
- }
- //產生浮水印後的圖片
- @unlink($groundImage);
- switch($ground_info[2 ])//取得背景圖片的格式
- {
- case 1:imagegif($ground_im,$groundImage);break;
- case 2:imagejpeg($ground_im,$groundImage);break;
- case 3:imagepng($ground_im,$groundImage);break;
- default:die($errorMsg);
- }
- //釋放記憶體
- if(isset($water_info)) unset($ water_info);
- if(isset($water_im)) imagedestroy($water_im);
- unset($ground_info);
- imagedestroy($ground_im);
- }
-
- //--------------------
- if(isset($_FILES) && !empty($_FILES['userfile']) && $_FILES['userfile ']['size']>0)
- {
- $uploadfile = “./”.time().”_”.$_FILES['userfile']['name'];
- if (copy($_FILES['userfile']['tmp_name'], $uploadfile))
- {
- echo “OK
- “;
- //文字浮水印
- imageWaterMark($uploadfile, 9,”Noname.gif”,”www.nj-kingsway.com “,5,”#FF0000″);
- //圖片浮水印
- //$waterImage=”./Hanweb_shuiyin.gif”;/ /水印圖片路徑
- //imageWaterMark($uploadfile,0,$waterImage);
- echo ““;
- }
- else
- {
- echo “Fail
- “;
- }
} ?>
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