can not redeclare function quote error in model

Code:
&lt;?php

class Quote extends CI_Model

  {

    function insert_quote($file_name)

     {

       $data=array('ready'=>$this->input->post('ready'),'aim1'=>$this->input->post('aim1'),'aim2'=>$this->input->post('aim2'),'aim3'=>$this->input->post('aim3'),'aim4'=>$this->input->post('aim4'),'aim5'=>$this->input->post('aim5'),'aim6'=>$this->input->post('aim6'),'aim7'=>$this->input->post('aim7'),'aim8'=>$this->input->post('aim8'),'project_type'=>$this->input->post('project_type'),'feature1'=>$this->input->post('feature1'),'feature2'=>$this->input->post('feature2'),'feature3'=>$this->input->post('feature3'),'feature4'=>$this->input->post('feature4'),'feature5'=>$this->input->post('feature5'),'feature6'=>$this->input->post('feature6'),'feature7'=>$this->input->post('feature7'),'feature8'=>$this->input->post('feature8'),'feature9'=>$this->input->post('feature9'),'company'=>$this->input->post('company'),'similar_site'=>$this->input->post('similar_site'),'file_name'=>$file_name,'contact_name'=>$this->input->post('contact_name'),'email'=>$this->input->post('email'),'country'=>$this->input->post('country'),'city'=>$this->input->post('city'),'phone'=>$this->input->post('phone'),'skype_id'=>$this->input->post('skype'),'gtalk_id'=>$this->input->post('gtalk'),'contact_mthd'=>$this->input->post('contact_mthd'),'request_status'=>'0','address'=>$this->input->post('address'));

$query=$this->db->insert('request_quote',$data);

$this->db->query($query);

     }

} ?&gt;