如何从php或cakephp中的youtube的iframe获取视频ID
问题描述：
我有这个iframe
i have this iframe
<iframe width="425" height="349" src="http://www.youtube.com/embed/YRUG-Pu7RzE" frameborder="0" allowfullscreen></iframe>
如何通过正则表达式获取视频ID或任何.....
how to get video id from it by regular expression or any.....
答
您可以使用：
$subject = '<iframe width=\"425\" height=\"349\" src=\"http://www.youtube.com/embed/YRUG-Pu7RzE\" frameborder=\"0\" allowfullscreen></iframe>';
$pattern = '!http://(?:www.)?youtube.com/embed/([^"']+)!i';
$result = preg_match($pattern, $subject, $subpattern);
$ subpattern将包含：
$subpattern will contain:
Array ( [0] => http://www.youtube.com/embed/YRUG-Pu7RzE [1] => YRUG-Pu7RzE )