文档类型对照

'chm'=>'application/octet-stream',
    'ppt'=>'application/vnd.ms-powerpoint',
    'xls'=>'application/vnd.ms-excel',
    'doc'=>'application/msword',
    'exe'=>'application/octet-stream',
    'rar'=>'application/octet-stream',
    'js'=>"javascrīpt/js",
    'css'=>"text/css",
    'hqx'=>"application/mac-binhex40",
    'bin'=>"application/octet-stream",
    'oda'=>"application/oda",
    'pdf'=>"application/pdf",
    'ai'=>"application/postsrcipt",
    'eps'=>"application/postsrcipt",
    'es'=>"application/postsrcipt",
    'rtf'=>"application/rtf",
    'mif'=>"application/x-mif",
    'csh'=>"application/x-csh",
    'dvi'=>"application/x-dvi",
    'hdf'=>"application/x-hdf",
    'nc'=>"application/x-netcdf",
    'cdf'=>"application/x-netcdf",
    'latex'=>"application/x-latex",
    'ts'=>"application/x-troll-ts",
    'src'=>"application/x-wais-source",
    'zip'=>"application/zip",
    'bcpio'=>"application/x-bcpio",
    'cpio'=>"application/x-cpio",
    'gtar'=>"application/x-gtar",
    'shar'=>"application/x-shar",
    'sv4cpio'=>"application/x-sv4cpio",
    'sv4crc'=>"application/x-sv4crc",
    'tar'=>"application/x-tar",
    'ustar'=>"application/x-ustar",
    'man'=>"application/x-troff-man",
    'sh'=>"application/x-sh",
    'tcl'=>"application/x-tcl",
    'tex'=>"application/x-tex",
    'texi'=>"application/x-texinfo",
    'texinfo'=>"application/x-texinfo",
    't'=>"application/x-troff",
    'tr'=>"application/x-troff",
    'roff'=>"application/x-troff",
    'shar'=>"application/x-shar",
    'me'=>"application/x-troll-me",
    'ts'=>"application/x-troll-ts",
    'gif'=>"image/gif",
    'jpeg'=>"image/pjpeg",
    'jpg'=>"image/pjpeg",
    'jpe'=>"image/pjpeg",
    'ras'=>"image/x-cmu-raster",
    'pbm'=>"image/x-portable-bitmap",
    'ppm'=>"image/x-portable-pixmap",
    'xbm'=>"image/x-xbitmap",
    'xwd'=>"image/x-xwindowdump",
    'ief'=>"image/ief",
    'tif'=>"image/tiff",
    'tiff'=>"image/tiff",
    'pnm'=>"image/x-portable-anymap",
    'pgm'=>"image/x-portable-graymap",
    'rgb'=>"image/x-rgb",
    'xpm'=>"image/x-xpixmap",
    'txt'=>"text/plain",
    'c'=>"text/plain",
    'cc'=>"text/plain",
    'h'=>"text/plain",
    'html'=>"text/html",
    'htm'=>"text/html",
    'htl'=>"text/html",
    'rtx'=>"text/richtext",
    'etx'=>"text/x-setext",
    'tsv'=>"text/tab-separated-values",
    'mpeg'=>"video/mpeg",
    'mpg'=>"video/mpeg",
    'mpe'=>"video/mpeg",
    'avi'=>"video/x-msvideo",
    'qt'=>"video/quicktime",
    'mov'=>"video/quicktime",
    'moov'=>"video/quicktime",
    'movie'=>"video/x-sgi-movie",
    'au'=>"audio/basic",
    'snd'=>"audio/basic",
    'wav'=>"audio/x-wav",
    'aif'=>"audio/x-aiff",
    'aiff'=>"audio/x-aiff",
    'aifc'=>"audio/x-aiff",
    'swf'=>"application/x-shockwave-flash"