Database Folder SRC Code

<?php
include 'conn.php';
$sql = "SELECT * FROM `karl_view`";
$params = array("");
$data = getData($sql,$params);
//var_dump($data);
?>
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>Bootstrap 4, from LayoutIt!</title>

    <meta name="description" content="Source code generated using layoutit.com">
    <meta name="author" content="LayoutIt!">

    <link href="css/bootstrap.min.css" rel="stylesheet">
    <link href="css/style.css" rel="stylesheet">

  </head>
  <body>

    <div class="container-fluid">
    <div class="row">
        <div class="col-md-12">
            <div class="row">
                <div class="col-md-3"><h3>Student Firstname</h3></div>
                <div class="col-md-3"><h3> Student Surname</h3></div>
                <div class="col-md-3"><h3> Teacher First Name</h3></div>
                <div class="col-md-3"><h3> Teacher Surname</h3></div>
            </div>
        <?php for($i=0;$i<count($data);$i++){ ?>
        <div class="row">
            <div class="col-md-3"> <p><?php echo $data[$i]["Firstname"]?></p></div>
            <div class="col-md-3"> <p> <?php echo $data[$i]["Surname"]?></p></div>
            <div class="col-md-3"> <p> <?php echo $data[$i]["Teacher_Firstname"]?></p></div>
            <div class="col-md-3"> <p> <?php echo $data[$i]["Teacher_Surname"]?></p></div>
        </div>
        <?php } ?>
</div>

    <script src="js/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <script src="js/scripts.js"></script>
  </body>
</html>