Mini Shell

<?php

include '../db/database.php';

$sql = "SELECT * FROM teacher AS t1 LEFT JOIN title_name AS t2 ON (t1.titleID = t2.titleID)      
       LEFT JOIN  history_crown AS t3   ON (t1.teacherID = t3.teachercrID )
       LEFT JOIN crown AS t4 ON (t3.crownID = t4.crownID) WHERE status_user = 1 or status_user = 2 or status_user = 3 group by teacherID order By historycrownID desc ";

$result = mysqli_query($link, $sql);

$crownArray = array();
while ($row = mysqli_fetch_assoc($result)) {
    $crownArray[] = $row;
}
echo json_encode($crownArray);