从字符串中获取img url和video url - Geting img url and video url from a string

Geting img url and video url from a string

本文关键字：url video img 获取字符串 | 更新日期: 2023-09-27

我有一个html字符串

<img alt='' src='http:'/'/1.gravatar.com'/avatar'/9ed48ee692d84679c0aa2509985a4c74?s=96&amp;d=http%3A%2F%2F1.gravatar.com%2Favatar%2Fad516503a11cd5ca435acc9bb6523536%3Fs%3D96&amp;r=G' class='avatar avatar-96 photo' height='96' width='96' '/>

，我只需要从中提取url。

同样，这里是json

  [{"ID":1,"post_author":"1","post_date":"2014-04-17 16:09:47","post_date_gmt":"2014-04-17 16:09:47","post_content":"Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!'r'n'r'n&lt;iframe id='"viddler-ce3d9b65'" src='"'/'/www.viddler.com'/embed'/ce3d9b65'/?f=1&amp;autoplay=0&amp;player=full&amp;secret=53324891&amp;disablebackwardseek=0&amp;disableseek=0&amp;disableforwardseek=0&amp;loop=0&amp;nologo=0&amp;hd=0'" width='"437'" height='"288'" frameborder='"0'" mozallowfullscreen='"true'" webkitallowfullscreen='"true'"&gt;&lt;'/iframe&gt;'r'n'r'n&nbsp;","post_title":"Hello world!","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"open","post_password":"","post_name":"hello-world","to_ping":"","pinged":"","post_modified":"2014-05-09 09:35:11","post_modified_gmt":"2014-05-09 09:35:11","post_content_filtered":"","post_parent":0,"guid":"http:'/'/neevo.simple-task.com'/?p=1","menu_order":0,"post_type":"post","post_mime_type":"","comment_count":"2","filter":"raw"}]

，只需要提取到src中的视频链接。

我该怎么做?

更新:这解决了img SCR问题

        $dom = new DOMDocument();
        $dom->loadHTML($ava);
        $url =  $dom->getElementsByTagName('img')->item(0)->getAttribute('src');

假设您在php中执行此操作，为了能够提取您想要的JSON信息，您只需将其解码为php数组，然后取出所需的部分。例如:

$json = your_json_feed;
$data = json_decode($json);
$video_url_tmp = $data["post_content"];

这将使$video_url_tmp包含:

Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!'r'n'r'n&lt;iframe id='"viddler-ce3d9b65'" src='"'/'/www.viddler.com'/embed'/ce3d9b65'/?f=1&amp;autoplay=0&amp;player=full&amp;secret=53324891&amp;disablebackwardseek=0&amp;disableseek=0&amp;disableforwardseek=0&amp;loop=0&amp;nologo=0&amp;hd=0'" width='"437'" height='"288'" frameborder='"0'" mozallowfullscreen='"true'" webkitallowfullscreen='"true'"&gt;&lt;'/iframe&gt;'r'n'r'n&nbsp;

这是JSON提要中你想要的部分，它有URL。然后，您将需要一个RegEx来提取您需要的部分。它可能更容易RegEx "id='"viddler-ce3d9b65'"部分出来，然后弄清楚如何viddler创建它的链接/嵌入/任何形式自己。

希望这对你有帮助。

参考json_decode:http://php.net/manual/en/function.json-decode.php