[PHP]Kindeditor4.1上传图片时添加水印的功能实现
[PHP]主要修改upload_json.php文件,首先在upload_json.php文件中添加水印函数Kindeditor4.1上传图片时添加水印的功能实现
主要修改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 = $water_fontfile;
- //读取水印文件
- if(!emptyempty($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($formatMsg);
- }
- }else{
- alert("需要加水印的图片不存在!");
- }
- //水印位置
- if($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, $alpha);
- }else{//文字水印
- if( !emptyempty($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);
- }
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*/
- 最好是图片和文字水印只用一种;
- 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。
热门文章推荐
- [php]优酷真实视频地址解析算法
- [Dz]discuz手机版支持视频播放的方法
- [PHP]php加密js解密的方法实例
- [php]用PHP打印出前一天的时间格式
- [PHP]mpeg,mp3,avi的ffmpeg的php转换类
- [php]php中3DES加密一个非常有用的3des加密
- [PHP]php.ini修改上传文件的大小限制处理方法
- [php]用过的最好用的php分页类源代码
请稍候...