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关于php抓取页面信息的简单代码

WBOY
WBOYOriginal
2016-06-13 10:47:05978browse

利用php DOM函数实现简单的单页信息抓取   (在这里尽抓取a标签,功能实现了,但是扩展页链接抓取没有实现,欢迎大家批评指导)
error_reporting(E_ERROR);
$pages = file_get_contents('http://www.php100.com');
//$pages = htmlspecialchars($pages);
$doc = new DOMDocument();
$new_doc = new DOMDocument('1.0', 'utf-8');
$doc->loadhtml($pages);
$dom = $doc->getElementsByTagName('a');
for ($i=0;$ilength;$i++){
$node = $new_doc->createElement('a',$dom->item($i)->nodeValue);
$newnode = $new_doc->appendChild($node);
$newnode->setAttribute('href',$dom->item($i)->getAttribute('href'));
$newnode->setAttribute('style','display:block;margin-left:30px;');//echo $dom->item($i)->getAttribute('src').'';
}
echo $new_doc->saveHTML(); 
?>

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