php匹配页面中的所有路径

方法一

$url=‘http://www.google.cn/search?q=php‘;$html=file_get_contents($url);$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 />‘;}

$url=‘http://www.google.cn/search?q=php‘;$str=file_get_contents($url);$preg=‘/<a .*?href="(.*?)".*?>/is‘;preg_match_all($preg,$str,$array2);for($i=0;$i<count($array2[1]);$i++)//逐个输出超链接地址{ ???echo $array2[1][$i]."<br />";}