PHP & MYSQL: using group by for categories

Question

My database has the following setup

productid | productname | category id

and I want to output them like so:

category #1
it         


        

Answer 1

$stmt = $dbConnection->prepare("SELECT exam_id, COUNT(report_id) FROM bug_report GROUP BY exam_id; ");
        //$stmt->bind_param('s',$exam_id); 
        $stmt->execute();
        $extract = $stmt->get_result();
        $count = $extract->num_rows;
        if($count){
            while($rows = $extract->fetch_assoc()){
                $exam_id = $rows["exam_id"];
                switch($exam_id){
                    case "jee_questions":
                        $jeeBugCount = $rows["COUNT(report_id)"];
                        break;
                    case "gate_questions":
                        $gateBugCount = $rows["COUNT(report_id)"];
                        break;
                }
            }   
        }