Products 8.22 9p

<?php
    session_start();
    if( !isset( $_SESSION['fname'] ))
    {
    header("location: CR_login.php");
    }

    // Establish a connection to the database
    $con =  mysqli_connect("localhost", "cairil_php", "phpsql");

    // Check if there were any issues connecting to the database
    if ( mysqli_connect_errno() != 0)
    {
       die("An error occurred trying to establish a connection: " .mysqli_connect_error());
    }

    // Select the  database to work with.
    $db  =  mysqli_select_db ($con , "cairil_php");

    // Specify the query to run
    $sqlString = "SELECT * FROM  Product";

    // Run the query using the connection established earlier and assign the results to a results object.
    $rs = mysqli_query ($con  , $sqlString);


    ?>

<html>
    <head>
        <title> CR_Products.php </title>
    </head>

<center>
<h1>Welcome <?php echo(($_SESSION['fname']) . " " . ($_SESSION['lname'])) ?></h1>
<br />
<h3>Product List</h3>
<table border="2" align="center">
<tbody>
<tr bgcolor="#88ccaa"><th align="center">Product ID</th><th align="center">Product Name</th><th align="center">Units In Stock</th><th align="center">Add To Cart</th></tr>
<?php
            // While there is another record in the result object, fetch it
            while ($row = mysqli_fetch_array ($rs))
            {
                echo("<tr><td>");
                echo($row["ProductID"]);
                echo("</td><td>");
                echo($row["ProductName"]);
                echo("</td><td>");
                echo($row["UnitsInStock"]);
                echo("</td><td>");
                ?>
                <a href=CR_cart.php?action=add&id=$row["ProductID"])><img title="Add to Cart" src="/images/add.png" alt="Add to Cart" width="100" height="30" /></a>
        <?php
            }
            // Destroy the result object and release its memory
            mysqli_free_result($rs);

            // Close the connection
            mysqli_close($con);
        ?></td></tr>
<tr bgcolor="#88ccaa">
<td colspan="13" align="center"></td>
</tr>
</tbody>
</table>
<br /><br />
<table>
<tr>
<td><a href=CR_products.php><img title"view products" src="/images/b-products.png" alt="View Product" /></a>
    <a href=CR_cart.php><img title"view cart" src="/images/b-shopping.png" alt="View Cart" /></a>
    <a href=CR_order.php><img title"view order" src="/images/b-orders.png" alt="View Orders"/></a></td></tr>
    <tr></tr>    <tr></tr>
    <tr><td align="center"><a href=CR_welcome.php><img title="home" src="/images/home_button.png" alt="home" width="150" height="50"/></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href=CR_logout.php><img title"logout" src="/images/exit_button.jpg" alt="Logout" /></a></td></tr>
</table>
</center>
</body>
</html>