$this->load->library('fckeditor', 'FCKEDITOR1');
$this->fckeditor->BasePath = 'system/plugins/FCKeditor/';
$this->fckeditor->ToolbarSet = 'Basic';
$data['fck1'] = $this->fckeditor->CreateHtml();
$this->fckeditor->InstanceName = 'FCKEDITOR2';
$data['fck2'] = $this->fckeditor->CreateHtml();
$this->load->view('mypage', $data);
//在服务器端,可以这样:
$first_box = $this->input->post('FCKEDITOR1');
$second_box = $this->input->post('FCKEDITOR2');