'file_mimes' => array(
//图片
'png' => 'image/png',
'jpg' => 'image/jpeg',
'gif' => 'image/gif',
'bmp' => 'image/bmp',
'psd' => 'application/octet-stream',
'ico' => 'image/x-ico',
//压缩文件
'rar' => 'application/octet-stream',
'zip' => 'application/zip',
'7z' => 'application/octet-stream',
//执行文件
'exe' => 'application/octet-stream',
//媒体文件
'avi' => 'video/avi',
'rmvb'=> 'application/vnd.rn-realmedia-vbr',
'3gp' => 'application/octet-stream',
'flv' => 'application/octet-stream',
'mp3' => 'audio/mpeg',
'wav' => 'audio/wav',
//歌词
'krc' => 'application/octet-stream',
'lrc' => 'application/octet-stream',
//文本文档
'txt' => 'text/plain',
'doc' => 'application/msword',
'xls' => 'application/vnd.ms-excel',
'ppt' => 'application/vnd.ms-powerpoint',
'pdf' => 'application/pdf',
'chm' => 'application/octet-stream',
'mdb' => 'application/msaccess',
'sql' => 'application/octet-stream',
'con' => 'application/octet-stream',
'log' => 'text/plain',
'dat' => 'application/octet-stream',
'ini' => 'application/octet-stream',
'php' => 'application/octet-stream',
'html'=> 'text/html',
'htm' => 'text/html',
'ttf' => 'application/octet-stream',
'fon' => 'application/octet-stream',
'js' => 'application/x-javascript',
'xml' => 'text/xml',
'css' => 'text/css',
'dll' => 'application/octet-stream',
)
