php 截取一个网页的所有超链接的代码 急急

header("Content-type: text/html; charset=utf-8");
if(!empty($_POST['input_text'])) {
ini_set('default_socket_timeout', 60); //php file_get_contents超时控制
if(!$data = file_get_contents($_POST['input_text'])) {
echo "Time out!";
return false;
}else{
$charset_pos = stripos($data,'charset');
if($charset_pos) { //页面数据编码格式转换
if(stripos($data,'utf-8',$charset_pos)) {
$data = iconv('utf-8','utf-8',$data);
}else if(stripos($data,'gb2312',$charset_pos)) {
$data = iconv('gb2312','utf-8',$data);
}else if(stripos($data,'gbk',$charset_pos)) {
$data = iconv('gbk','utf-8',$data);
}
}
}

//获取超链接核心代码

$pattern = '/]*?)>([^<]*?)<\/a>/i';
preg_match_all($pattern, $data, $links);

$links[2]为全部链接。

$br = 5;
echo "

function get_links($content) {
$pattern = '/(.*?)<\/a>/i';
preg_match_all($pattern, $content, $m);
return $m;
}

远程截取 就用curl_exec 或者 fopen

这个方法可取：
function get_links($content) { $pattern = '/(.*?)<\/a>/i'; preg_match_all($pattern, $content, $m); return $m; }