how to display all users who attempted test or not?

                    Hi all i am trying to display all users who are attempted a test or not .all users are under one supervisor.need to display all users under supervisor those users who are attempted test or not .like below output         

          i need output like below


                           |test1|tes2
                    user1  | pass|fail
                    user2  | fail|pass
                    user3  |     |



                    controller: this is my controller code

                    if ($supervisor) {

    //this query is to get user under supervisor

                                $users_query="SELECT u.* FROM usr_data u, udf_text v WHERE u.usr_id != 6  AND u.usr_id = v.usr_id " . $supervisor_condition . " GROUP BY u.usr_id";

                                $user_records = $this->base_model->executeSelectQuery($users_query);
                                $final_dataa = [];

                                foreach ($user_records as $user) {

                                    $user=(object)$user;
     //this query is for to get users who attempted tests

                            $user_test=" SELECT u.*,o.title FROM usr_data u, object_data o,tst_tests tt,tst_active ta WHERE u.usr_id != 6 AND ta.user_fi=u.usr_id AND tt.obj_fi=o.obj_id AND ta.test_fi=tt.test_id AND ta.user_fi = $user->usr_id";

                            $tst_records=$this->base_model->executeSelectQuery($user_test);

                            if (count($tst_records)) {

                                foreach ($tst_records as $tst) {
                                    $tst=(object)$tst;
                       $dta['usr_id']       = $user->usr_id;
               $dta['firstname']        = $user->firstname;                 
               $dta['matriculation']    = $user->matriculation;
                $dta['approve_date'] = $this->udfTextData(1, $user->usr_id);    
                $dta['department']  = $user->department;
               $dta['job_title'] = $this->udfTextData(6, $user->usr_id);
               $dta['test_title'] = $tst->title;
                  $final_dataa[] =  $dta;
                                                    }
                                }
                                else{

                 $dta['usr_id']         = $user->usr_id;
               $dta['firstname']        = $user->firstname;                 
               $dta['matriculation']    = $user->matriculation;
                $dta['approve_date'] = $this->udfTextData(1, $user->usr_id);    
                $dta['department']  = $user->department;
               $dta['job_title'] = $this->udfTextData(6, $user->usr_id);
               // $dta['test_title'] = $tst->title;
                  $final_dataa[] =  $dta;

                                }                 
                        }                                                                       
                                }
                    $dataa['recordss'] = $final_dataa;
                    $this->load->view('supervisor', $dataa);


                    View: this is my view to display as table

                    <table class="table" id="myTable">
                                            <thead> 
                                              <tr>
                                                 <?php
                                               if(count($recordss)){                               
                                          foreach ($recordss as $records) { 
                                            $records = (object)$records;
                                              ?>
                                                 <td></td>
                                                <td></td>
                                                <td></td>
                                                <td></td>
                                                <td></td>         
                                                <td></td>   
                                                <td><?phpechoucfirst($records->test_title);?></td> 
                                                 <?php  }}?>


                                            <tr>
                                                <th>Employe no</th>
                                                <th>Employe Name</th>
                                                <th>Date Joined</th>
                                                <th> Division</th>
                                                <th>Department</th>         
                                                <th>Job Title</th>  

                                            </tr>
                                          </thead>                   
                                      <tbody>
          <?php 

       if(count($recordss))

{
foreach ($recordss as $records) {

         $records = (object)$records;
         $date_joined_y =substr($records->approve_date,0,4);
         $date_joined_m =substr($records->approve_date,4,2);
         $date_joined_d =substr($records->approve_date,6,2);

   $date_joined = $date_joined_d."-".$date_joined_m."-".$date_joined_y;?>

                                            <tr>                     
     <td><?php echo ucfirst($records->matriculation); ?></td>

     <td><a href="<?php echo base_url();?>welcome/employee/<?php echo $records->usr_id;?>"><?php echo ucfirst($records->firstname); ?></td>

    <td><?php echo $date_joined; ?></td>

                                                <td></td> 

          <td><?php echo ucfirst($records->department); ?></td>

         <td><?php echo ucfirst($records->job_title); ?></td>                  

                                            </tr>
                                            <?php } } ?>

                                          </tbody>

                                        </table>


but am getting error like below:|Message: Undefined property: 

             |test1|tes2|Message: Undefined property:stdClass::$test_title 
      user1  | pass|fail|
      user2  | fail|pass|
      user3  |     |    |

i am trying to display all users who are attempted a test or not .all users are under one supervisor.need to display all users under supervisor those users who are attempted test or not .like below output i am trying to display all users who are attempted a test or not .all users are under one supervisor.need to display all users under supervisor those users who are attempted test or not .like below output