regarding of this question..

PHP Booking timeslot

I tried 'GROUP BY' id_timeslot still didnt work, as its only showing the booked timeslot not available

i tried that solution, but give me an error and not quite understand how to use 'coelence'

table timeslot  (id_timeslot integer);
table doctor (id_doctor integer);
table bookslot  (id_bookslot, id_doctor, id_timeslot integer);

insert into doctor (id_doctor)
values (1 = doc_A), (2 = doc_B), (3 = doc_C);

insert into TimeSlot (id_timeslot)
values (1 = 10:00:00), (2 = 10:15:00), (3 = 10:30:00), (4 = 10:45:00);

insert into bookslot (id_doctor,id_timeslot)
values (1,1), (1,5), (2,1), (2,4), (3,1);

Join mysql table

$q = $mysqli->query("SELECT * FROM bookslot 
  RIGHT JOIN timeslot ON bookslot.id_timeslot = timeslot.id_timeslot
  LEFT JOIN doctor ON bookslot.id_doctor = doctor.id_doctor ");

echoing result and checking if it matches todays date or else set available

while($r = $q->fetch_array(MYSQLI_ASSOC)) :

 echo '<tr>';
 echo '<td align="center">' . $r['times']  . '</td>';

 if($r['booked_date'] == date('Y-m-d') && $r['id_doctor'] == 1):
  echo '<td><a href="#available" class="booked">booked</a></td>';
 else :
  echo '<td><a href="#" class="available">available</a></td>';
 endif;

 if($r['booked_date'] == date('Y-m-d') && $r['id_doctor'] == 2):
  echo '<td><a href="#available" class="booked">booked</a></td>';
 else :
  echo '<td><a href="#" class="available">available</a></td>';
 endif;

 if($r['booked_date'] == date('Y-m-d') && $r['id_doctor'] == 3):
  echo '<td><a href="#available" class="booked">booked</a></td>';
 else :
  echo '<td><a href="#" class="available">available</a></td>';
 endif;

echo '</tr>';

endwhile;

result from webpage

and i want the result look like:

id_timeslot  doc_A    doc_B    doc_C
----------------------------------------------
1            booked     booked     booked
2            available  available  available
3            available  available  available
4            available  booked     available
5            booked     available  available

Any other solution please!