在網上找的浮水印代碼: /* * 功能:PHP圖片浮水印 (浮水印支援圖片或文字) * 參數: * $product_img 背景圖片,即需要加浮水印的圖片,暫只支援GIF,JPG,PNG格式; * $waterPos 浮水印位置,有10種狀態,0為隨機位置; * 1為頂端居左,2為頂端置中,3為頂端居右; * 4為中部居左,5為中部置中,6為中部居右; * 7為底端居左,8為底端置中,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,選其中之一即可,優先使用 $waterImage。 * 當$waterImage有效時,參數$waterString、$stringFont、$stringColor均不生效。 * 加浮水印後的圖片的檔案名稱和 $product_img 一樣。 * 作者:longware @ 2004-11-3 14:15:13 */ function imageWaterMark ($product_img,$waterPos=0,$waterImage="",$waterText="",$textFont=5,$textColor="#FF0000") { $isWaterImage = FALSE; $formatMsg = "暫不支援該檔案格式,請用圖片處理軟體將圖片轉換為GIF、JPG、PNG格式。"; //讀取浮水印檔案 if(!empty($waterImage) && file_exists($waterImage)) { $isWaterImage = TRUE; $water_info = getimagesize($waterImage); $water_w = $water_info[0];//取得浮水印圖片的寬 $water_h = $water_info[1];//取得浮水印圖片的高 switch($water_info[2])//取得浮水印圖片的格式 { case 1water_im = imagecreatefromgif($waterImage);break; case 2water_im = imagecreatefromjpeg($waterImage);break; case 3water_im = imagecreatefrompng($waterImage);break; default:die($formatMsg); } } //讀取背景圖片 if(!empty($product_img) && file_exists($product_img)) { $ground_info = getimagesize($product_img); $ground_w = $ground_info[0];//取得背景圖片的寬 $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:$ground_im = imagecreatefromgif($product_img);break; case 2:$ground_im = imagecreatefromjpeg($product_img);break; case 3:$ground_im = imagecreatefrompng($product_img);break; default:die($formatMsg); } } else { die("需要加浮水印的圖片不存在!"); } //浮水印位置 if($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,"arial.ttf",$waterText);//取得使用 TrueType 字型的文 本的範圍 $w = $temp[2] - $temp[6]; $h = $temp[3] - $temp[7]; unset($temp); $label = "文字地區"; } if( ($ground_w<$w) || ($ground_h<$h) ) { echo "需要加浮水印的圖片的長度或寬度比浮水印".$label."還小,無法產生浮水印!"; 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為頂端置中 $posX = ($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為中部置中 $posX = ($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為底端置中 $posX = ($ground_w - $w) / 2; $posY = $ground_h - $h; break; case 9://9為底端居右 $posX = $ground_w - $w; $posY = $ground_h - $h; break; default://隨機 $posX = rand(0,($ground_w - $w)); $posY = rand(0,($ground_h - $h)); break; } //設定映像的混色模式 imagealphablending($ground_im, true); if($isWaterImage)//圖片浮水印 { imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷貝浮水印到目標檔案 } 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("浮水印文字顏色格式不正確!"); } imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B)); } //產生浮水印後的圖片 @unlink($product_img); switch($ground_info[2])//取得背景圖片的格式 { case 1:imagegif($ground_im,$product_img);break; case 2:imagejpeg($ground_im,$product_img);break; case 3:imagepng($ground_im,$product_img);break; default:die($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,0,"",http://www.bkjia.com,5,"#FF0000"); //圖片浮水印 //$waterImage="images/bz.gif";//浮水印圖片路徑 //imageWaterMark($uploadfile,0,$waterImage); echo ""; } else { echo "Fail "; } } |