我无法从一些网站获取元描述标签，其中一个特别是youtube。
我尝试过使用“get_meta_tags”，但是它没有返回描述。我也尝试过使用几个正则表达式。标题返回良好。
请尝试从以下链接获取描述：http://www.youtube.com/watch?v=xci0-2600万bk
$url = http://www.youtube.com/watch?v=xci0-26M-bk ;
if ($fp = @fopen($url, r )) {
$file = file($url);
$file = implode("", $file);
$tags = get_meta_tags($url);
$description = trim($tags[ description ]);
}
$description返回空白。。。
为什么不直接将$url放在get_meta_tags中？
如果我这样做：
print_r(get_meta_tags( http://www.youtube.com/watch?v=xci0-26M-bk ));
我得到：
Array ( [title] => Catfish Blues - Jimi Hendrix Experience [description] => Couldn't ignore Jimi any longer. This is a track recorded for Radio one about 1967. Love the simplicity (seemingly)and the, understated, power. [keywords] => Jimi, Hendrix, sixties )
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