souce code for display

<?php
$con=mysqli_connect("localhost","root","","database");
session_start();
$result=$con->query("SELECT * FROM record");

if($result->num_rows!=0)
{
    echo "<table border='1'>
          <tr>
          <th> id </th>
          <th> name </th>
          <th> roll </th>
          <th> subject</th>
</tr>";

    while($rows=$result->fetch_assoc())
    {
        echo "<tr>
         <th>".$rows['id']."</th>
         <th>".$rows['name']."</th>
         <th>".$rows['roll']."</th>
         <th>".$rows['subject']."</th>
         </tr>";
    }

    echo "</table>";
}
?>