function blob_post()
	{
		$this->load->library('zip');
		$this->load->library('upload', $config);  

		$config['upload_path'] = "./uploads/";
		$config['allowed_types'] = 'jpg|png|jpeg|bmp|pdf|zip';	
		$config['max_size'] = '0';
		$config['max_width'] = '0';
		$config['max_height'] = '0';
		$config['encrypt_name'] = false;


		if($_POST || $_FILES){
			if(!$this->upload->do_upload('userfile')){
				$errmsg =  $this->upload->display_errors('', ''); 
		} else { 
		 $w = $this->upload->data(); 
		 $path = $w['full_path']; 
		 $this->zip->add_data($w['file_name'], file_get_contents($path)); 
		 // $this->zip->download('test.zip'); 
		 $zip_file = $this->zip->get_zip(); $
		 data = array(
		 	 'id' => $this->input->post('id'), 
		 	 'blob' => $zip_file, 
		 	 'filename' => $w['file_name']
		 	 ); 
		 $this->DB1->insert('blobtest', $data); $this->output->enable_profiler(TRUE); 
		}
	}