PHP/DOMXpath/DOMDocument-无法分析特定链接

这是我的代码，您可以复制并粘贴它以开始运行，测试完成：

<?php
$url = "http://www.sportsdirect.com/ladies/ladies-underwear";

libxml_use_internal_errors(true); 
$doc = new DOMDocument();
$doc->loadHTMLFile($url);

$xpath = new DOMXpath($doc);

$n  = $xpath->query('//div[@class="s-producttext-top-wrapper"]');
$l  = $xpath->query('//div[@class="s-producttext-top-wrapper"]/a');
$p  = $xpath->query('//div[@class="s-largered"]');
$nl = $xpath->query('//a[@class="swipeNextClick NextLink"]');
$NextLink  = $nl->item(0)->getAttribute("data-dcp");

$item = 0;
foreach ($n as $entry) {
    $Name      = $entry->nodeValue;
    $Link      = $l->item($item)->getAttribute("href");

    $Price     = $p->item($item)->nodeValue;

    $Find = array('£');
    $Replace   = array('');

    $Price = str_replace($Find, $Replace, $Price);      

    echo "Name: $Name - Link: $Link - Price: $Price - $NextLink<br>";
$item++;    

}
?>

我仍然得到第一页产品的结果。为什么？ 如何解析第2页中的所有产品，我的错误在哪里

你能帮帮我吗

提前谢谢

<?php
$url = "http://www.sportsdirect.com/ladies/ladies-underwear#dcp=2&dppp=100&OrderBy=rank";

libxml_use_internal_errors(true); 
$doc = new DOMDocument();
$doc->loadHTMLFile($url);

$xpath = new DOMXpath($doc);

$n  = $xpath->query('//div[@class="s-producttext-top-wrapper"]');
$l  = $xpath->query('//div[@class="s-producttext-top-wrapper"]/a');
$p  = $xpath->query('//div[@class="s-largered"]');
$nl = $xpath->query('//a[@class="swipeNextClick NextLink"]');
$NextLink  = $nl->item(0)->getAttribute("data-dcp");

$item = 0;
foreach ($n as $entry) {
    $Name      = $entry->nodeValue;
    $Link      = $l->item($item)->getAttribute("href");

    $Price     = $p->item($item)->nodeValue;

    $Find = array('£');
    $Replace   = array('');

    $Price = str_replace($Find, $Replace, $Price);      

    echo "Name: $Name - Link: $Link - Price: $Price - $NextLink<br>";
$item++;    

}
?>