INSERTION OF ANSWER WITH CORRESPONDING QUESTION ID

VIEW FILE
Below is the code am using to pull-out questions and its corresponding answers
<ol>
  <ol>
  <?php
  foreach ($questions as $question){
        echo"<input type=\"hidden\" id=\"hiden\" name=\"qid[]\" value=\"$question->id\">";

      echo'<li><strong>'.$question->question.'</strong></li>';

      foreach($answers as $answer){
         if($answer->question_id === $question->id)
          echo"<input name=\"yankho[".$question->id."]\" type=\"radio\" value=\"$answer->id\"/>".$answer->q_answer."<br />";
          }
      }
  ?>
MODEL
Below is the code am using to insert question id and answer id into the answers table
<?php
public function set_user_answers(){
       $session_data = $this->session->userdata('user_in');
       $id = $session_data['id'];
       $data = array();
    foreach($this->input->post('qid') as $qvalue){

         foreach($this->input->post('yankho') as $value){

         $data[] = array('question_id' => $qvalue,'selected_answer' => $value,'user_id'=>$id);
            #$this->db->set('cdate', 'now()', FALSE);
           }
        }
     return $this->db->insert_batch('cpd_pretest_answers', $data);
   }
?>