如何从页面(php)获取所有网址 [英] How to get all urls from page (php)

问题描述

我有一个网址，网址中的描述一个接一个地列出(类似于书签/网站列表).如何使用php从该页面获取所有网址并将其写入txt文件(每行一个，仅网址不带说明)?

I have a page with urls with descriptions listed one under another (something like bookmarks/list of sites). How do I use php to get all urls from that page and write them to txt file (one per line, only url without description)?

页面看起来像这样:

一些描述

其他描述

另一个

我希望脚本的txt输出看起来像这样:

And I would like script's txt output to look like this:

http://link.com

http://link2.com

http://link3.com

推荐答案

一种方法

$url="http://wwww.somewhere.com";
$data=file_get_contents($url);
$data = strip_tags($data,"<a>");
$d = preg_split("/<\/a>/",$data);
foreach ( $d as $k=>$u ){
    if( strpos($u, "<a href=") !== FALSE ){
        $u = preg_replace("/.*<a\s+href=\"/sm","",$u);
        $u = preg_replace("/\".*/","",$u);
        print $u."\n";
    }
}

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