[英]Get Paginated Links With php and simple html dom
我有這段代碼嘗試使用php獲取分頁鏈接,但結果並不安靜。 誰能幫我。
我得到的只是第一個鏈接的重復實例。
<?php
include_once('simple_html_dom.php');
function dlPage($href) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($curl, CURLOPT_URL, $href);
curl_setopt($curl, CURLOPT_REFERER, $href);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4");
$str = curl_exec($curl);
curl_close($curl);
// Create a DOM object
$dom = new simple_html_dom();
// Load HTML from a string
$dom->load($str);
$Next_Link = array();
foreach($dom->find('a[title=Next]') as $element){
$Next_Link[] = $element->href;
}
print_r($Next_Link);
$next_page_url = $Next_Link[0];
if($next_page_url !='') {
echo '<br>' . $next_page_url;
$dom->clear();
unset($dom);
//load the next page from the pagination to collect the next link
dlPage($next_page_url);
}
}
$url = 'https://www.jumia.com.gh/phones/';
$data = dlPage($url);
//print_r($data)
?>
我想要得到的是
mySiteUrl/?facet_is_mpg_child=0&viewType=gridView&page=2
mySiteUrl//?facet_is_mpg_child=0&viewType=gridView&page=3
。 。 。 到分頁中的最后一個鏈接。 請幫忙
這里是。 看看我htmlspecialchars_decode鏈接。 導致curl中的href不應在xml中出現&。 返回值dlPage應該是分頁中的最后一個鏈接。 我明白了
<?php
include_once('simple_html_dom.php');
function dlPage($href, $already_loaded = array()) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($curl, CURLOPT_URL, $href);
curl_setopt($curl, CURLOPT_REFERER, $href);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4");
$htmlPage = curl_exec($curl);
curl_close($curl);
echo "Loading From URL:" . $href . "<br/>\n";
$already_loaded[$href] = true;
// Create a DOM object
$dom = file_get_html($href);
// Load HTML from a string
$dom->load($htmlPage);
$next_page_url = null;
$items = $dom->find('ul[class="osh-pagination"] li[class="item"] a[title="Next"]');
foreach ($items as $item) {
$link = htmlspecialchars_decode($item->href);
if (!isset($already_loaded[$link])) {
$next_page_url = $link;
break;
}
}
if ($next_page_url !== null) {
$dom->clear();
unset($dom);
//load the next page from the pagination to collect the next link
return dlPage($next_page_url, $already_loaded);
}
return $href;
}
$url = 'https://www.jumia.com.gh/phones/';
$data = dlPage($url);
echo "DATA:" . $data . "\n";
輸出為:
Loading From URL:https://www.jumia.com.gh/phones/<br/>
Loading From URL:https://www.jumia.com.gh/phones/?facet_is_mpg_child=0&viewType=gridView&page=2<br/>
Loading From URL:https://www.jumia.com.gh/phones/?facet_is_mpg_child=0&viewType=gridView&page=3<br/>
Loading From URL:https://www.jumia.com.gh/phones/?facet_is_mpg_child=0&viewType=gridView&page=4<br/>
Loading From URL:https://www.jumia.com.gh/phones/?facet_is_mpg_child=0&viewType=gridView&page=5<br/>
DATA:https://www.jumia.com.gh/phones/?facet_is_mpg_child=0&viewType=gridView&page=5
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