前些日子把phpcms的内置编辑器改成了百度UE编辑器，非常好用，但是有个地方不是很满意，就是没法给上传的图片加水印了，经过一番研究终于实现了出来，分享给大家

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：

//图片加水印

public function watermark($source, $target = '', $w_pos = '', $w_img = '', $w_text = '99danji',$w_font = 8, $w_color = '#ff0000') {

$this->w_img = 'watermark.png';

$this->w_pos = 9;

$this->w_minwidth = 400;

$this->w_minheight = 200;

$this->w_quality = 80;

$this->w_pct = 85;

$w_pos = $w_pos ? $w_pos : $this->w_pos;

$w_img = $w_img ? $w_img : $this->w_img;

//if(!$this->watermark_enable || !$this->check($source)) return false;

if(!$target) $target = $source;

//$w_img = PHPCMS_PATH.$w_img;

//define('WWW_PATH', dirname(dirname(dirname(__FILE__)));

$w_img = '../../../images/water/'.$w_img;

$source_info = getimagesize($source);

$source_w = $source_info[0];

$source_h = $source_info[1];

//if($source_w < $this->w_minwidth || $source_h < $this->w_minheight) return false;

switch($source_info[2]) {

case 1 :

$source_img = imagecreatefromgif($source);

break;

case 2 :

$source_img = imagecreatefromjpeg($source);

break;

case 3 :

$source_img = imagecreatefrompng($source);

break;

default :

return false;

}

if(!empty($w_img) && file_exists($w_img)) {

$ifwaterimage = 1;

$water_info = getimagesize($w_img);

$width = $water_info[0];

$height = $water_info[1];

switch($water_info[2]) {

case 1 :

$water_img = imagecreatefromgif($w_img);

break;

case 2 :

$water_img = imagecreatefromjpeg($w_img);

break;

case 3 :

$water_img = imagecreatefrompng($w_img);

break;

default :

return;

}

} else {

$ifwaterimage = 0;

$temp = imagettfbbox(ceil($w_font*2.5), 0, PC_PATH.'libs/data/font/elephant.ttf', $w_text);

$width = $temp[2] - $temp[6];

$height = $temp[3] - $temp[7];

unset($temp);

}

switch($w_pos) {

case 1:

$wx = 5;

$wy = 5;

break;

case 2:

$wx = ($source_w - $width) / 2;

$wy = 0;

break;

case 3:

$wx = $source_w - $width;

$wy = 0;

break;

case 4:

$wx = 0;

$wy = ($source_h - $height) / 2;

break;

case 5:

$wx = ($source_w - $width) / 2;

$wy = ($source_h - $height) / 2;

break;

case 6:

$wx = $source_w - $width;

$wy = ($source_h - $height) / 2;

break;

case 7:

$wx = 0;

$wy = $source_h - $height;

break;

case 8:

$wx = ($source_w - $width) / 2;

$wy = $source_h - $height;

break;

case 9:

$wx = $source_w - $width;

$wy = $source_h - $height;

break;

case 10:

$wx = rand(0,($source_w - $width));

$wy = rand(0,($source_h - $height));

break;

default:

$wx = rand(0,($source_w - $width));

$wy = rand(0,($source_h - $height));

break;

}

if($ifwaterimage) {

if($water_info[2] == 3) {

imagecopy($source_img, $water_img, $wx, $wy, 0, 0, $width, $height);

} else {

imagecopymerge($source_img, $water_img, $wx, $wy, 0, 0, $width, $height, $this->w_pct);

}

} else {

if(!empty($w_color) && (strlen($w_color)==7)) {

$r = hexdec(substr($w_color,1,2));

$g = hexdec(substr($w_color,3,2));

$b = hexdec(substr($w_color,5));

} else {

return;

}

imagestring($source_img,$w_font,$wx,$wy,$w_text,imagecolorallocate($source_img,$r,$g,$b));

}

switch($source_info[2]) {

case 1 :

imagegif($source_img, $target);

break;

case 2 :

imagejpeg($source_img, $target, $this->w_quality);

break;

case 3 :

imagepng($source_img, $target);

break;

default :

return;

}

if(isset($water_info)) {

unset($water_info);

}

if(isset($water_img)) {

imagedestroy($water_img);

}

unset($source_info);

imagedestroy($source_img);

return true;

}

public function check($image) {

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]));

}

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：

复制代码 代码如下:

if ($this->watermark) {

$this->watermark($this->filePath,$this->filePath);

}

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：

/* 上传配置 */

$base64 = "upload";

switch (htmlspecialchars($_GET['action'])) {

case 'uploadimage':

$config = array(

"pathFormat" => $CONFIG['imagePathFormat'],

"maxSize" => $CONFIG['imageMaxSize'],

"allowFiles" => $CONFIG['imageAllowFiles']

);

$fieldName = $CONFIG['imageFieldName'];

$watermark = true;

break;

然后在后面还有一句要改成：

复制代码 代码如下:

/* 生成上传实例对象并完成上传 */

$up = new Uploader($fieldName, $config, $base64, $watermark);

这样就大功告成了，本文主要是提供思路和参考。

以上所述就是本文的全部内容了，希望大家能够喜欢，能够对大家使用ue编辑器有所帮助。

本文原创发布php中文网，转载请注明出处，感谢您的尊重！