首先要让CkEditor出现图片上传的功能，需要配置编辑器的filebrowserImageUploadUrl属性：

复制代码 代码如下:

CKEDITOR.replace( 'editor1',
    {
        filebrowserUploadUrl : '/uploader/upload.php',
        filebrowserImageUploadUrl : '/uploader/upload.php?type=Images'
    });

然后在对应的URL上实现图片上传的功能，并向CKEditor返回特定格式的HTML代码，CKEditor就能正常预览并插入图片了。
下面只截取控制器的部分代码，Controller部分我是这样实现的：

复制代码 代码如下:

/**
 * 保存上传的图片
 *
 * @return string javascript code
 * @author lfyzjck
 **/
public function actionImg($type, $CKEditor, $CKEditorFuncNum, $langCode = 'zh-cn')
{
 if(empty($CKEditorFuncNum) || $type != 'Images'){
  $this->mkhtml($CKEditorFuncNum,'','错误的函数调用');
 }
 if(isset($_FILES['upload'])){
  //获取关于图片上传配置
  $options = Options::model()->findByPk(1);
  $form = new UploadForm('image',$options);
  $form->upload = CUploadedFile::getInstanceByName('upload');
  if($form->validate()){
  //文件名：时间+源文件名
   $target_filename = date('Ymd-hm',time()).$form->upload->getName();
   $path = Yii::app()->basePath.'/../uploads/'.$target_filename;   //图片保存路径
   $form->upload->saveAs($path);
   $this->mkhtml($CKEditorFuncNum,Yii::app()->baseUrl.'/uploads/'.$target_filename, "上传成功");
  }
  else{
   $this->mkhtml($CKEditorFuncNum,'',$form->getError('upload'));
  }
 }
}
/**
 * 返回CKEditor的提示信息
 *
 * @return void
 * @author lfyzjck
 **/
private function mkhtml($fn, $fileurl, $message)
{
 $str = '';
 exit($str);
}

需要特别说明的mkhtml函数，他会调用CKEditor的函数产生提示信息。上传成功的时候将图片链接返回，CKEditor会根据URL生成图片预览。

然后是UploadForm的代码，这里会验证图片的格式和大小是否符合要求。

复制代码 代码如下:

class UploadForm extends CFormModel
{
 public $upload;

 private $options;
 private $type;

 public function __construct($type, $options){
  $this->options = $options;
  $this->type = $type;
 }
 /**
  * Declares the validation rules.
  * The rules state that username and password are required,
  * and password needs to be authenticated.
  */
 public function rules()
 {
  return array(
   array('upload', 'file',
    'types' => $this->options->getAttribute("allow_".$this->type."_type"),
    'maxSize' => 1024 * (int)$this->options->getAttribute("allow_".$this->type."_maxsize"),
    'tooLarge'=>'文件大小超过限制',
   ),
  );
 }
}