判定mine类型的东西

$filetype=array();
$filetype['hqx']="application/mac-binhex40";
$filetype['bin']="application/octet-stream";
$filetype['oda']="application/oda";
$filetype['pdf']="application/pdf";
$filetype['ai']="application/postsrcipt";
$filetype['eps']="application/postsrcipt";
$filetype['es']="application/postsrcipt";
$filetype['rtf']="application/rtf";
$filetype['mif']="application/x-mif";
$filetype['csh']="application/x-csh";
$filetype['dvi']="application/x-dvi";
$filetype['hdf']="application/x-hdf";
$filetype['nc']="application/x-netcdf";
$filetype['cdf']="application/x-netcdf";
$filetype['latex']="application/x-latex";
$filetype['ts']="application/x-troll-ts";
$filetype['src']="application/x-wais-source";
$filetype['zip']="application/zip";
$filetype['bcpio']="application/x-bcpio";
$filetype['cpio']="application/x-cpio";
$filetype['gtar']="application/x-gtar";
$filetype['shar']="application/x-shar";
$filetype['sv4cpio']="application/x-sv4cpio";
$filetype['sv4crc']="application/x-sv4crc";
$filetype['tar']="application/x-tar";
$filetype['ustar']="application/x-ustar";
$filetype['man']="application/x-troff-man";
$filetype['sh']="application/x-sh";
$filetype['tcl']="application/x-tcl";
$filetype['tex']="application/x-tex";
$filetype['texi']="application/x-texinfo";
$filetype['texinfo']="application/x-texinfo";
$filetype['t']="application/x-troff";
$filetype['tr']="application/x-troff";
$filetype['roff']="application/x-troff";
$filetype['shar']="application/x-shar";
$filetype['me']="application/x-troll-me";
$filetype['ts']="application/x-troll-ts";
$filetype['gif']="image/gif";
$filetype['jpeg']="image/pjpeg";
$filetype['jpg']=array("image/pjpeg","image/jpeg");
$filetype['jpe']="image/pjpeg";
$filetype['ras']="image/x-cmu-raster";
$filetype['pbm']="image/x-portable-bitmap";
$filetype['ppm']="image/x-portable-pixmap";
$filetype['xbm']="image/x-xbitmap";
$filetype['xwd']="image/x-xwindowdump";
$filetype['ief']="image/ief";
$filetype['tif']="image/tiff";
$filetype['tiff']="image/tiff";
$filetype['pnm']="image/x-portable-anymap";
$filetype['pgm']="image/x-portable-graymap";
$filetype['rgb']="image/x-rgb";
$filetype['xpm']="image/x-xpixmap";
$filetype['txt']="text/plain";
$filetype['c']="text/plain";
$filetype['cc']="text/plain";
$filetype['h']="text/plain";
$filetype['html']="text/html";
$filetype['htm']="text/html";
$filetype['htl']="text/html";
$filetype['rtx']="text/richtext";
$filetype['etx']="text/x-setext";
$filetype['tsv']="text/tab-separated-values";
$filetype['mpeg']="video/mpeg";
$filetype['avi']="video/avi";
$filetype['rm']="video/rm";
$filetype['rmvb']="video/rmvb";
$filetype['wmv']="video/x-ms-wmv";
$filetype['flv']="application/octet-stream";
$filetype['mpg']="video/mpeg";
$filetype['mpe']="video/mpeg";
$filetype['avi']="video/x-msvideo";
$filetype['qt']="video/quicktime";
$filetype['mov']="video/quicktime";
$filetype['moov']="video/quicktime";
$filetype['movie']="video/x-sgi-movie";
$filetype['au']="audio/basic";
$filetype['mp3']="audio/mp3";
$filetype['snd']="audio/basic";
$filetype['wav']="audio/wav";
$filetype['wma']="audio/x-ms-wma";
$filetype['aif']="audio/x-aiff";
$filetype['aiff']="audio/x-aiff";
$filetype['aifc']="audio/x-aiff";
$filetype['swf']="application/x-shockwave-flash";
$filetype['doc']="application/msword";
$filetype['ini']='application/octet-stream';
?>