php用xpath解析html的代码实例讲解

实例1

$xml = simplexml_load_file('https://forums.eveonline.com'); 
 
$names = $xml->xpath("html/body/p/p/form/p/p/p/p/p[*]/p/p/table//tr/td[@class='topicviews']"); 
foreach($names as $name) 
{ 
 echo $name . "<br/>"; 
}

实例2

$url = 'http://www.baidu.com';
$ch = curl_init();
curl_setopt($ch, curlopt_file, fopen('php://stdout', 'w'));
curl_setopt($ch, curlopt_returntransfer, true);
curl_setopt($ch, curlopt_url, $url);
$html = curl_exec($ch); 
curl_close($ch);
 
// create document object model
$dom = new domdocument();
// load html into document object model
@$dom->loadhtml($html);
// create domxpath instance
$xpath = new domxpath($dom);
// get all elements with a particular id and then loop through and print the href attribute
$elements = $xpath->query('//*[@id="lg"]/img/@src');
foreach ($elements as $e) {
 echo ($e->nodevalue);
}

以上就是相关的2个实例内容，以及相关的代码， 感谢大家对的支持。