Trying to sort and store values in descending order. Not able to do it?

public function gl_popular(){
$query=$this->db->query("SELECT DISTINCT new_ques_id FROM gl_mark_ques");
//echo "SELECT DISTINCT new_ques_id FROM gl_mark_ques" ."<br>";
if($query->num_rows > 0){
$question = array();
        foreach($query->result() as $row){
        $question[]=array(
        'question'=>$row->new_ques_id,
        'quest'=> $this->gl_avg_pop($row->new_ques_id),//tryin to sort according to this.
        'get_quest'=>$this->gl_get_question($row->new_ques_id),
        );
        }
        $av=array();
  开发者_开发问答      //$av=asort($question[1]);
        rsort($question[1]);
        foreach ($question as $key => $val) {
        echo "$key = $val\n";
        }
        //return $question;
        //var_dump($av);
        }

}

the problem is $question['quest'] gives me a floating point number. I need to store the array in such a way that highest floating point number will be first. Just not able to do it. Kindly help.

Have a look at array_multisort()
or, to make a bit more sense, add this to the query ORDER BY new_ques_id DESC