Mini Shell

<?php 
    include '../db/database.php';
    include 'function_editdate.php';
    $trainID = $_POST['id'];
    $sql = "SELECT * FROM train      
                 WHERE (`trainID`='$trainID') ";   
   $result = mysqli_query($link, $sql);   
   $row = mysqli_fetch_array($result);
   
   $rowdate = $row['traindate'];
   $endrowdate = $row['endtraindate'];
   $rowdate1 = mydatesql($rowdate);
   $endrowdate1 = mydatesql($endrowdate);
   
   $arr = array("trainID"=>$row['trainID'],
                "teachertrID"=>$row['teachertrID'],
                "traindate"=>$rowdate1,
                "endtraindate"=>$endrowdate1,
               "subjecttrain"=>$row['subjecttrain'],
               "placetrain"=>$row['placetrain'],
               "imagetrain1"=>$row['imagetrain1'],
               "imagetrain2"=>$row['imagetrain2']);
   
   echo json_encode($arr);