为百度UEDITOR编辑器上传图片添加水印

form:http://www.uphtm.com/php/255.html

UEDITOR编辑器上传图片是自动提取的，但是图片没有水印功能，下面小编和各位一起来看看。

UEditor编辑器没有上传图片加水印的功能，需要进行二次开发，本例是在PHPCMS系统中对百度编辑器进行二次开发，添加上传图片加水印功能。

首先打开UEditor编辑器文件目录的php文件夹，打开Uploader.class.php，把PHPCMS添加水印的方法复制过来，加到这个类所有成员方法最后面，然后进行修改如下：

 

1. //图片加水印
2. public function watermark($source, $target = '', $w_pos = '', $w_img = '', $w_text = '99danji',$w_font = 8, $w_color = '#ff0000') {
3.     $this->w_img = 'watermark.png';
4.     $this->w_pos = 9;
5.     $this->w_minwidth = 400;
6.     $this->w_minheight = 200;
7.     $this->w_quality = 80;
8.     $this->w_pct = 85;
9.  
10.     $w_pos = $w_pos ? $w_pos : $this->w_pos;
11.     $w_img = $w_img ? $w_img : $this->w_img;
12.     //if(!$this->watermark_enable || !$this->check($source)) return false;
13.     if(!$target) $target = $source;
14.     //$w_img = PHPCMS_PATH.$w_img;
15.     //define('WWW_PATH', dirname(dirname(dirname(__FILE__)));
16.     $w_img = '../../../images/water/'.$w_img;
17.     $source_info = getimagesize($source);
18.     $source_w    = $source_info[0];
19.     $source_h    = $source_info[1];
20.     //if($source_w < $this->w_minwidth || $source_h < $this->w_minheight) return false;
21.     switch($source_info[2]) {
22.         case 1 :
23.             $source_img = imagecreatefromgif($source);
24.             break;
25.         case 2 :
26.             $source_img = imagecreatefromjpeg($source);
27.             break;
28.         case 3 :
29.             $source_img = imagecreatefrompng($source);
30.             break;
31.         default :
32.             return false;
33.     }
34.     if(!empty($w_img) && file_exists($w_img)) {
35.         $ifwaterimage = 1;
36.         $water_info   = getimagesize($w_img);
37.         $width        = $water_info[0];
38.         $height       = $water_info[1];
39.         switch($water_info[2]) {
40.             case 1 :
41.                 $water_img = imagecreatefromgif($w_img);
42.                 break;
43.             case 2 :
44.                 $water_img = imagecreatefromjpeg($w_img);
45.                 break;
46.             case 3 :
47.                 $water_img = imagecreatefrompng($w_img);
48.                 break;
49.             default :
50.                 return;
51.         }
52.     } else {       
53.         $ifwaterimage = 0;
54.         $temp = imagettfbbox(ceil($w_font*2.5), 0, PC_PATH.'libs/data/font/elephant.ttf', $w_text);
55.         $width = $temp[2] - $temp[6];
56.         $height = $temp[3] - $temp[7];
57.         unset($temp);
58.     }
59.     switch($w_pos) {
60.         case 1:
61.             $wx = 5;
62.             $wy = 5;
63.             break;
64.         case 2:
65.             $wx = ($source_w - $width) / 2;
66.             $wy = 0;
67.             break;
68.         case 3:
69.             $wx = $source_w - $width;
70.             $wy = 0;
71.             break;
72.         case 4:
73.             $wx = 0;
74.             $wy = ($source_h - $height) / 2;
75.             break;
76.         case 5:
77.             $wx = ($source_w - $width) / 2;
78.             $wy = ($source_h - $height) / 2;
79.             break;
80.         case 6:
81.             $wx = $source_w - $width;
82.      $wy = ($source_h - $height) / 2;
83.             break;
84.         case 7:
85.             $wx = 0;
86.             $wy = $source_h - $height;
87.             break;
88.         case 8:
89.             $wx = ($source_w - $width) / 2;
90.             $wy = $source_h - $height;
91.             break;
92.         case 9:
93.             $wx = $source_w - $width;
94.             $wy = $source_h - $height;
95.             break;
96.         case 10:
97.             $wx = rand(0,($source_w - $width));
98.             $wy = rand(0,($source_h - $height));
99.             break;             
100.         default:
101.             $wx = rand(0,($source_w - $width));
102.             $wy = rand(0,($source_h - $height));
103.             break;
104.     }
105.     if($ifwaterimage) {
106.         if($water_info[2] == 3) {
107.             imagecopy($source_img, $water_img, $wx, $wy, 0, 0, $width, $height);
108.         } else {
109.             imagecopymerge($source_img, $water_img, $wx, $wy, 0, 0, $width, $height, $this->w_pct);
110.         }
111.     } else {
112.         if(!empty($w_color) && (strlen($w_color)==7)) {
113.             $r = hexdec(substr($w_color,1,2));
114.             $g = hexdec(substr($w_color,3,2));
115.             $b = hexdec(substr($w_color,5));
116.         } else {
117.             return;
118.         }
119.         imagestring($source_img,$w_font,$wx,$wy,$w_text,imagecolorallocate($source_img,$r,$g,$b));
120.     }
121.    
122.     switch($source_info[2]) {
123.         case 1 :
124.             imagegif($source_img, $target);
125.             break;
126.         case 2 :
127.             imagejpeg($source_img, $target, $this->w_quality);
128.             break;
129.         case 3 :
130.             imagepng($source_img, $target);
131.             break;
132.         default :
133.             return;
134.     }
135.  
136.     if(isset($water_info)) {
137.         unset($water_info);
138.     }
139.     if(isset($water_img)) {
140.         imagedestroy($water_img);
141.     }
142.     unset($source_info);
143.     imagedestroy($source_img);
144.     return true;
145. }
146.  
147. public function check($image) {
148.     return extension_loaded('gd') && preg_match("/\.(jpg|jpeg|gif|png)/i", $image, $m) && file_exists($image) && function_exists('imagecreatefrom'.($m[1] == 'jpg' ? 'jpeg' : $m[1]));
149. }

对比我修改的部分，由于phpcms水印可以在后台管理设置，phpcms自带的水印方法通过读取配置文件获取路径，和读取数据库设置获取参数设置，那么这些地方需要手动进行设置。

对了，在upFile方法还要添加一段函数：

1. if ($this->watermark) {
2.     $this->watermark($this->filePath,$this->filePath);
3. }

然后打开UEditor百度编辑器php目录下的action_upload.php文件，加上是否添加水印的参数：

1. /* 上传配置 */
2. $base64 = "upload";
3. switch (htmlspecialchars($_GET['action'])) {
4.     case 'uploadimage':
5.         $config = array(
6.             "pathFormat" => $CONFIG['imagePathFormat'],
7.             "maxSize" => $CONFIG['imageMaxSize'],
8.             "allowFiles" => $CONFIG['imageAllowFiles']
9.         );
10.         $fieldName = $CONFIG['imageFieldName'];
11.         $watermark = true;
12.         break;

然后在后面还有一句要改成：

1. /* 生成上传实例对象并完成上传 */
2. $up = new Uploader($fieldName, $config, $base64, $watermark);

这样就大功告成了，本文主要是提供思路和参考。

form:http://www.uphtm.com/php/255.html