- //php水印函数
- function imageWaterMark($groundImage,$waterPos=0,$waterImage="",$waterText="",$textFont=5,$textColor="#FF0000")
- {
- $isWaterImage = FALSE;
- $formatMsg = "暂不支持该文件格式,请用图片处理软件将图片转换为GIF、JPG、PNG格式。";
- //读取水印文件
- if(!empty($waterImage) && file_exists($waterImage))
- {
- $isWaterImage = TRUE;
- $water_info = getimagesize($waterImage); //得到的是一个数组
- $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; //将图片转化为PHP可识别的编码过程
- case 2:$water_im = imagecreatefromjpeg($waterImage);break; //将图片转化为PHP可识别的编码过程
- case 3:$water_im = imagecreatefrompng($waterImage);break; //将图片转化为PHP可识别的编码过程
- default:die($formatMsg);
- }
- }
- //读取背景图片
- if(!empty($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*2.5),0,"c:/windows/fonts/stcaiyun.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<$w) || ($ground_h<$h) )
- {
- echo "需要加水印的图片的长度或宽度比水印".$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( !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,$groundImage);break; //创建gif格式的图片
- case 2:imagejpeg($ground_im,$groundImage);break; //创建jpeg格式的图片
- case 3:imagepng($ground_im,$groundImage);break; //创建png格式的图片
- default:die($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);
- }
- ?>
- php图片上传代码:
- for ($i=0;$i{
- $upfile="./img/".($i+1).".png";//此处路径换成你的
- if(move_uploaded_file($_FILES['userfile']['tmp_name'][$i],$upfile)){
- imageWaterMark($upfile,9,"./shuiyin.png","Made By Chenduan",5,"#FF0000");
- /*
- * 功能:图片水印 (水印支持图片或文字)
- * imageWaterMark($groundImage,$waterPos=0,$waterImage="",$waterText="",$textFont=5,$textColor="#FF0000")
- * 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;
- * $textColor 文字颜色,值为十六进制颜色值,默认为#FF0000(红色);
- */
- echo "";
- echo "第".($i+1)."张图片操作成功
"; - }
- else{
- echo "第".($i+1)."张图片上传不了
"; - }
- }
- ?>
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