listing.php with Bootstrap template

<?php
//include the database connectivity setting
include ("inc/dbconn.php");
//include the navigation bar
include ("inc/header-navbar.php");?>

<div class="container">
	<br>
	<br>
  <div class="row">
	  <div class="col-md-9" name="maincontent" id="maincontent">
		<!-- ***********Edit your content STARTS from here******** -->
		<h5>Template for PHP-MySQL Exercises</h5>
		Employee Listing<br>

		<?php
		//sql code to capture name & id
		$sql="select EMPNO, FIRSTNAME, LASTNAME
			from employee";
		$qr=mysqli_query($db,$sql);
		if(mysqli_num_rows($qr)==0){//record not found
			echo "Record not found";
		}
		else{//record listing
			echo "<table class='table table-striped table-bordered'>
					<thead>
					  <tr>
						<th>EMPNO</th>
						<th>FULLNAME</th>
					  </tr>
					</thead>";
			echo "<tbody>";
			while($rec=mysqli_fetch_array($qr)){

				echo "<tr>";
				echo
				"<td>".$rec['EMPNO'].
				"</td>
				<td>".
				$rec['FIRSTNAME']." ".
				$rec['LASTNAME'].
				"</td>";
				echo "</tr>";
			}
			echo "</tbody>
			</table>";
		}
		?>

		<!-- ***********Edit your content ENDS here******** -->

	</div><!-- end main content -->


	<?php
		//include the sidebar menu
		include ("inc/sidebar-menu.php");
	?>
  </div><!-- end row -->

</div><!-- end container -->


<?php
//include the footer
include ("inc/footer.php");?>