PHP 页面提取关键字和查找页面的所有链接

<meta charset="utf-8">
<?php
$meta = get_meta_tags('http://onestopweb.iteye.com/blog/2330507');
$keywords = $meta['keywords'];
$keywords = explode(',', $keywords);
$keywords = array_map('trim', $keywords);
$keywords = array_filter($keywords);
print_r($keywords);
?>

 效果图：

 

<meta charset="utf-8">
<?php
$html = file_get_contents('http://onestopweb.iteye.com/');
$dom = new DOMDocument();
@$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$hrefs = $xpath->evaluate("/html/body//a");
for ($i = 0; $i < $hrefs->length; $i++) {
	$href = $hrefs->item($i);
	$url = $href->getAttribute('href');
	echo $url.'<br />';
}
?>

 效果图：