[CodeIgniter] Multiple Image Upload

여러개의 이미지 업로드할 수 있는 소스입니다.
참고사이트는
http://codeigniter.com/forums/viewthread/80610/
http://codeigniter.com/forums/viewthread/129011/

Controller

 
class Upload extends Controller {

    function Upload()
    {
        parent::Controller();
        $this->load->helper(array('form','url','file'));
        
    
    }
    
    function index()
    {
        
        $this->load->view('upload/upload_index'); //Upload Form
        
    }

    function picupload()
    {
        //Load Model
        $this->load->model('Process_image');

        $config['upload_path'] = './uploads/';
        $config['allowed_types'] = 'gif|jpg|png';
        $config['max_size']    = '2048'; //2 meg


        $this->load->library('upload');

        foreach($_FILES as $key => $value)
        {
            if( ! empty($key['name']))
            {
                $this->upload->initialize($config);
        
                if ( ! $this->upload->do_upload($key))
                {
                    $errors[] = $this->upload->display_errors();
                    
                }    
                else
                {

                    $this->Process_image->process_pic();

                }
             }
        
        }
        
        
        $data['success'] = 'Thank You, Files Upladed!';

        $this->load->view('upload/upload_pictures', $data); //Picture Upload View

        
        
        
    } 

Model

class Process_image extends Model {
    
    function Process_image()
    {
        parent::Model();
        
        $this->load->library('image_lib');
        //Generate random Activation code
        
        function generate_code($length = 10){
    
                if ($length <= 0)
                {
                    return false;
                }
            
                $code = "";
                $chars = "abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ123456789";
                srand((double)microtime() * 1000000);
                for ($i = 0; $i < $length; $i++)
                {
                    $code = $code . substr($chars, rand() % strlen($chars), 1);
                }
                return $code;
            
                }

    }

function process_pic()
    {   
        //Connect to database
        $this->load->database();
        
        //Get File Data Info
        $uploads = array($this->upload->data());
        
        $this->load->library('image_lib');

        //Move Files To User Folder
        foreach($uploads as $key[] => $value)
        {
            
                        //Gen Random code for new file name
            $randomcode = generate_code(12);
            
            $newimagename = $randomcode.$value['file_ext'];
            
            //Creat Thumbnail
            $config['image_library'] = 'GD2';
            $config['source_image'] = $value['full_path'];
            $config['create_thumb'] = TRUE;
            $config['thumb_marker'] = '_tn';
            $config['master_dim'] = 'width';
            $config['quality'] = 75;
            $config['maintain_ratio'] = TRUE;
            $config['width'] = 175;
            $config['height'] = 175;
            $config['new_image'] = '/pictures/'.$newimagename;

            //$this->image_lib->clear();
            $this->image_lib->initialize($config);
            //$this->load->library('image_lib', $config);
            $this->image_lib->resize();
            
            //Move Uploaded Files with NEW Random name
            rename($value['full_path'],'/pictures/'.$newimagename);
            
            //Make Some Variables for Database
            $imagename = $newimagename;
            $thumbnail = $randomcode.'_tn'.$value['file_ext'];
            $filesize = $value['file_size'];
            $width = $value['image_width'];
            $height = $value['image_height'];
            $timestamp = time();
            
            //Add Pic Info To Database
            $this->db->set('imagename', $imagename);
            $this->db->set('thumbnail', $thumbnail);
            $this->db->set('filesize', $filesize);
            $this->db->set('width', $width);
            $this->db->set('height', $height);
            $this->db->set('timestamp', $timestamp);
            
            //Insert Info Into Database
            $this->db->insert('pictures');

        }
        
        
        
    }

View

Table

CREATE TABLE IF NOT EXISTS `img_pictures` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `imagename` varchar(100) NOT NULL,
  `thumbnail` varchar(100) DEFAULT NULL,
  `folder` varchar(255) DEFAULT NULL,
  `filesize` int(11) NOT NULL,
  `width` int(11) NOT NULL,
  `height` int(11) NOT NULL,
  `thumb_width` int(11) DEFAULT NULL,
  `thumb_height` int(11) DEFAULT NULL,
  `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8;