获取指定URl页面中所有链接

//获取指定URL页面中所有链接function get_url_href($url){$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 = $href->getAttribute('href');if(substr($url,0,4) == 'http') echo $url.'<br>';}}