ช่วยดูแบ่งหน้าเว็บไซด์ให้หน่อยครับ xml+php ใครพอจะมีตัวอย่างบ้านครับ

<?php
$data = simplexml_load_file($domain . '/data/data.xml');
$total = count($data->product);
$perPage = 48;
// คำนวณจำนวนหน้าทั้งหมด  
$num_naviPage = ceil($total / $perPage);

// กำหนดจุดเริ่มต้น และสิ้นสุดของรายการแต่ละหน้าที่จะแสดง  
if (!isset($_GET['page'])) {
    $s_key = 0;
    $e_key = $perPage;
    $_GET['page'] = 1;
} else {
    $s_key = ($_GET['page'] * $perPage) - $perPage;
    $e_key = $perPage * $_GET['page'];
    $e_key = ($e_key > $total) ? $total : $e_key;
}

$Prev_Page = $_GET['page'] - 1;
$Next_Page = $_GET['page'] + 1;
?>
<!-- Begin Body -->
<div class="container">
    <div class="no-gutter row">
        <?php echo categorys($domain); ?>
        <!-- right content column-->
        <div class="col-md-7" id="content">
            <div class="panel">
                <div class="panel-heading" style="background-color:#111;color:#fff;"><strong></strong></div> 
                <div class="panel-body">

                    <div class="row">
                        <?php
                        $intRows = 0;
                        for ($indexFeed = $s_key; $indexFeed < $e_key; $indexFeed++) {
                            $intRows++;
                            ?>
                            <div class="col-sm-4">
                                <div class="product-image-wrapper">
                                    <div class="single-products">
                                        <div class="productinfo text-center">
                                            <a href="<?php echo $data->product[$indexFeed]->aff_links; ?>" rel="nofollow" target="__blank"><img src="<?php echo $data->product[$indexFeed]->image; ?>" alt="<?php echo $data->product[$indexFeed]->title; ?>"></a>
                                            <h2><?php echo $data->product[$indexFeed]->price; ?></h2>
                                            <p><a href="<?php echo $domain . $data->product[$indexFeed]->link; ?>"><?php echo $data->product[$indexFeed]->name; ?></a></p>
                                            <?php if ($data->product[$indexFeed]->review != "") { ?>
                                                <p><?php echo $data->product[$indexFeed]->review; ?> review</p>
                                                <p><img src="<?php echo $data->product[$indexFeed]->review_path; ?>" style="width: 80px;"></p>
                                            <?php } ?>
                                        </div>
                                    </div>
                                </div>
                            </div>				
                            <?php
                            if (($intRows) % 3 == 0) {
                                echo "</div>";
                                echo"<div class=\"row\">";
                            }
                        }
                        ?>
                    </div><!-- end row -->	

                    <div class="row">
                        <ul class="pagination pull-right">
                            <?php
                            if ($Prev_Page) {
                                echo "<li><a href='$domain?page=$Prev_Page'><< Back</a></li>";
                            }
                            ?>
                            <?php
                            for ($i = 1; $i <= $num_naviPage; $i++) {
                                if ($_GET['page'] == $i) {
                                    $class = 'active';
                                } else {
                                    $class = '';
                                }
                                echo "<li class='$class'><a href=$domain?page=$i>$i</a></li>";
                            }
                            ?>
                            <?php
                            //if ($Page != $Num_Pages) {
                            echo "<li><a href ='$domain?page=$Next_Page'>Next>></a></li>";
                            //}
                            ?>
                        </ul>    
                    </div>