controller:

		public?function?uploads()
		{
			if($_POST['sub'])
			{
				$config['upload_path']?=?'./application/uploads';?//同理?都是以?index.php?為主入口
				$config['allowed_types']?=?'jpg|jpeg|png|gif';
				$config['max_size']?=?1024;//1M
				$this->load->library('upload',$config);
				if(!$this->upload->do_upload())?//上傳失敗
				{
					$error?=?$this->upload->display_errors();
					echo?$error;
				}
				else?//上傳成功
				{
					$data?=?$this->upload->data();
					var_dump($data);
				}
			}
		}

view

注意 必須在controller中加載 helper 才能使用 form_open_multipart()函數(shù)

		public?function?__construct()
		{
			parent::__construct();
			$this->load->helper(array('form','url'));
		}