How Can I Upload An Image In Cakephp?

<?php
if ($this->request->is('post'))
    {
            $data = $this->request->data;
            pr($data);
            $multi = implode(",",$data['Form']['mcheckbox']);
            $data['Form']['mcheckbox']= $multi;

            if(!empty($data))
                {
                $image = $this->data['Form']['image'];
                pr($image);

                $imageTypes = array("image/gif", "image/jpeg", "image/png", "image/jpg");
                pr($imageTypes);

                $uploadFolder = "image";

               echo $uploadPath = WWW_ROOT . $uploadFolder;

                foreach ($imageTypes as $type) {
                pr($type);
                     if ($type == $image['type']) {

                        if ($image['error'] == 0) {

                            $imageName = $image['name'];

                            if (file_exists($uploadPath . '/' . $imageName)) {

                                $imageName = date('His') . $imageName;
                            }

                            $full_image_path = $uploadPath . '/' . $imageName;

                            if (move_uploaded_file($image['tmp_name'], $full_image_path)) {
                                $this->Session->setFlash('File saved successfully');
                                $this->set('imageName',$imageName);
                            } else {
                                $this->Session->setFlash('There was a problem uploading file. Please try again.');
                            }
                        } else {
                            $this->Session->setFlash('Error uploading file.');
                        }
                        break;
                    } else {
                        $this->Session->setFlash('Unacceptable file type');
                    }
                }
            }
            $mod = $this->Form->adddata($data);

            if($mod)
            {
                 $this->Session->setFlash(__('Your post has been saved.'));

                }
           else
            {
            $this->Session->setFlash(__('Unable to add your post.'));
            }

        }
    }

?>