php添加为kindeditor水印问题

改upload_json.php文件，首先在upload_json.php文件中添加水印函数：

/** 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；*  $alpha   水印透明度* $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 $groundImage 一样。*/function imageWaterMark($groundImage, $waterPos=0, $waterImage='', $alpha=80, $waterText='', $water_fontfile, $textFont=9, $textColor='#FF0000'){$isWaterImage  = FALSE;$formatMsg   = '暂不支持该文件格式，请用图片处理软件将图片转换为GIF、JPG、PNG格式。';$fontFile   = $water_fontfile;//读取水印文件if(!empty($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($formatMsg);}}//读取背景图片if(!empty($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($formatMsg);}}else{alert("需要加水印的图片不存在！");}//水印位置if($isWaterImage)//图片水印{$w = $water_w;$h = $water_h;$label = "图片的";}else{//文字水印$temp   = imagettfbbox($textFont, 0, $fontFile, $waterText);//取得使用 TrueType 字体的文本的范围$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 - $h;if(!$isWaterImage){$posY = $ground_h - $h-20;}break;default://随机$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//生成混合图像imagecopymerge($ground_im, $water_im, $posX, $posY, 0, 0, $water_w, $water_h, $alpha);}else{//文字水印if( !empty($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,$groundImage);break;case 2:imagejpeg($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);}

然后在

$json = new Services_JSON();

行后添加：

/*水印配置开始*/$water_mark  = 1;//1为加水印, 其它为不加$water_pos  = 9;//水印位置，10种状态【0为随机，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】$water_img  = $_SERVER['DOCUMENT_ROOT'] .'/assets/img/water.gif';//水印图片,默认填写空,请将图片上传至：attachments/water/目录下,例: logo.gif$water_alpha = 60;//水印透明度$water_text = '';//水印字符串,默认填写空;//$water_fontfile = $_SERVER['DOCUMENT_ROOT'] .'attachments/fonts/arial.ttf';//文字水印使用的字体;if($water_mark == 1){imageWaterMark($file_path, $water_pos, $water_img, $water_alpha, $water_text, $water_fontfile);}/*水印配置结束*/

PS：

1. 最好是图片和文字水印只用一种；
   
2. 使用potoshop制作的水印图片，保存为8通道且格式为GIF的测试成功。
3. 切记水印大小一定不能大过原图的大小
4.