<?PHP
    # the request
    $ch = curl_init('http://www.google.com');
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
    curl_exec($ch);

    # get the content type
    echo curl_getinfo($ch,CURLINFO_CONTENT_TYPE);

    # output
    // text/html; charset=ISO-8859-1
?>

产量

HTTP/1.1 301 Moved Permanently
Location: http://www.google.com/
Content-Type: text/html; charset=UTF-8
Date: Fri,09 Apr 2010 20:35:12 GMT
Expires: Sun,09 May 2010 20:35:12 GMT
Cache-Control: public,max-age=2592000
Server: gws
Content-Length: 219

要实际确认文件是否包含实际的MP3数据或任何其他媒体格式,我使用getID3().