Pagination help

[yandoo]

Hiya i was hoping for some help with my pagination. I don't quite understand why its not working. I've tried echoing out the $paginationDisplay and it doesn't display anything so its not getting its value. 

<?php 
// Script Error Reporting
error_reporting(E_ALL);
ini_set('display_errors', '1');
?>
<?php 
// Run a select query to get my letest 6 items
// Connect to the MySQL database  
include "storescripts/connect_to_mysql.php"; 
$dynamicList = "";
$sql = mysql_query("SELECT * FROM products ORDER BY date_added DESC");
$productCount = mysql_num_rows($sql); // count the output amount

//////////////////////////////////// Pagination Logic ////////////////////////////////////////////////////////////////////////
$nr = $productCount; // Get total of Num rows from the database query
if (isset($_GET['pn'])) { // Get pn from URL vars if it is present
    $pn = preg_replace('#[^0-9]#i', '', $_GET['pn']); // filter everything but numbers for security(new)
    //$pn = ereg_replace("[^0-9]", "", $_GET['pn']); // filter everything but numbers for security(deprecated)
} else { // If the pn URL variable is not present force it to be value of page number 1
    $pn = 1;
} 
//This is where we set how many database items to show on each page 
$itemsPerPage = 10; 
// Get the value of the last page in the pagination result set
$lastPage = ceil($nr / $itemsPerPage);
// Be sure URL variable $pn(page number) is no lower than page 1 and no higher than $lastpage
if ($pn < 1) { // If it is less than 1
    $pn = 1; // force if to be 1
} else if ($pn > $lastPage) { // if it is greater than $lastpage
    $pn = $lastPage; // force it to be $lastpage's value
} 
// This creates the numbers to click in between the next and back buttons
// This section is explained well in the video that accompanies this script
$centerPages = "";
$sub1 = $pn - 1;
$sub2 = $pn - 2;
$add1 = $pn + 1;
$add2 = $pn + 2;
if ($pn == 1) {
    $centerPages .= '  <span class="pagNumActive">' . $pn . '</span>  ';
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a>  ';
} else if ($pn == $lastPage) {
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a>  ';
    $centerPages .= '  <span class="pagNumActive">' . $pn . '</span>  ';
} else if ($pn > 2 && $pn < ($lastPage - 1)) {
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub2 . '">' . $sub2 . '</a>  ';
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a>  ';
    $centerPages .= '  <span class="pagNumActive">' . $pn . '</span>  ';
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a>  ';
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add2 . '">' . $add2 . '</a>  ';
} else if ($pn > 1 && $pn < $lastPage) {
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a>  ';
    $centerPages .= '  <span class="pagNumActive">' . $pn . '</span>  ';
    $centerPages .= '  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a>  ';
}
// This line sets the "LIMIT" range... the 2 values we place to choose a range of rows from database in our query
$limit = 'LIMIT ' .($pn - 1) * $itemsPerPage .',' .$itemsPerPage; 


// Now we are going to run the same query as above but this time add $limit onto the end of the SQL syntax
// $sql2 is what we will use to fuel our while loop statement below
$sql2 = mysql_query("SELECT * FROM products ORDER BY date_added DESC $limit"); 
//////////////////////////////// END Pagination Logic 

////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////  Pagination Display Setup /////////////////////////////////////////////////////////////////////
$paginationDisplay = ""; // Initialize the pagination output variable
// This code runs only if the last page variable is ot equal to 1, if it is only 1 page we require no paginated links to display
if ($lastPage != "1"){
    // This shows the user what page they are on, and the total number of pages
    $paginationDisplay .= 'Page <strong>' . $pn . '</strong> of ' . $lastPage. '        ';
    // If we are not on page 1 we can place the Back button
    if ($pn != 1) {
        $previous = $pn - 1;
        $paginationDisplay .=  '   <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $previous . '"> Back</a> ';
    } 
    // Lay in the clickable numbers display here between the Back and Next links
    $paginationDisplay .= '<span class="paginationNumbers">' . $centerPages . '</span>';
    // If we are not on the very last page we can place the Next button
    if ($pn != $lastPage) {
        $nextPage = $pn + 1;
        $paginationDisplay .=  '   <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $nextPage . '"> Next</a> ';
    } 
}
///////////////////////////////////// END Pagination Display Setup /
echo $paginationDisplay;

if ($productCount > 0) {
	while($row = mysql_fetch_array($sql2)){ 
             $id = $row["id"];
			 $product_name = $row["product_name"];
			 $price = $row["price"];
			 $date_added = strftime("%b %d, %Y", strtotime($row["date_added"]));
			 $dynamicList .= '<table width="100%" border="0" cellspacing="0" cellpadding="6">
        <tr>
          <td width="17%" valign="top"><a href="product.php?id=' . $id . '"><img style="border:#666 1px solid;" src="inventory_images/' . $id . '.jpg" alt="' . $product_name . '" width="77" height="102" border="1" /></a></td>
          <td width="83%" valign="top">' . $product_name . '<br />
            £' . $price . '<br />
            <a href="product.php?id=' . $id . '">View Product Details</a></td>
        </tr> <tr><td>' .$paginationDisplay. '</td></tr>
      </table>';
    }
} else {
	$dynamicList = "We have no products listed in our store yet";
}
mysql_close();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Store Home Page</title>
<link rel="stylesheet" href="style/style.css" type="text/css" media="screen" />
</head>
<body>
<center>
<div align="center" id="mainWrapper">
  <?php include_once("template_header.php");?>
  <div id="pageContent">
  <table width="100%" border="0" cellspacing="0" cellpadding="10">
  <tr>
    <td width="32%" valign="top"><h3>What the Hell?</h3>
      <p>side text</p></td>
    <td width="35%" valign="top"><h3>Latest Designer Fashions</h3>
      <p><?php echo $dynamicList; ?><br />
        </p>
      <p><br />
      </p></td>
    <td width="33%" valign="top"><h3>Handy Tips</h3>
      <p>side html text</p></td>
  </tr>
</table>

  </div>
  <?php include_once("template_footer.php");?>
</div></center>
</body>
</html>

If you can help me fix it I'd be ever so grateful. 

 

Thank you

[yandoo]

I just realised it is actually working! Mad moment! 

 

Thanks anyway