PHP实现的获取文件mimes类型工具类示例

本文实例讲述了PHP实现的获取文件mimes类型工具类。分享给大家供大家参考，具体如下：

<?php
/*
* Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
/*％******************************************************************************************％*/
// CLASS
/**
* Simplifies the process of looking up the content-types for a variety of file extensions.
*
* @version 2010.07.20
* @license See the included NOTICE.md file for more information.
* @copyright See the included NOTICE.md file for more information.
* @link http://aws.amazon.com/php/ PHP Developer Center
*/
class CFMimeTypes
{
 /**
  * Map of the extension-to-mime-types that we support.
  */
 public static $mime_types = array(
   '3gp' => 'video/3gpp',
   'ai' => 'application/postscript',
   'aif' => 'audio/x-aiff',
   'aifc' => 'audio/x-aiff',
   'aiff' => 'audio/x-aiff',
   'asc' => 'text/plain',
   'atom' => 'application/atom+xml',
   'au' => 'audio/basic',
   'avi' => 'video/x-msvideo',
   'bcpio' => 'application/x-bcpio',
   'bin' => 'application/octet-stream',
   'bmp' => 'image/bmp',
   'cdf' => 'application/x-netcdf',
   'cgm' => 'image/cgm',
   'class' => 'application/octet-stream',
   'cpio' => 'application/x-cpio',
   'cpt' => 'application/mac-compactpro',
   'csh' => 'application/x-csh',
   'css' => 'text/css',
   'dcr' => 'application/x-director',
   'dif' => 'video/x-dv',
   'dir' => 'application/x-director',
   'djv' => 'image/vnd.djvu',
   'djvu' => 'image/vnd.djvu',
   'dll' => 'application/octet-stream',
   'dmg' => 'application/octet-stream',
   'dms' => 'application/octet-stream',
   'doc' => 'application/msword',
   'dtd' => 'application/xml-dtd',
   'dv' => 'video/x-dv',
   'dvi' => 'application/x-dvi',
   'dxr' => 'application/x-director',
   'eps' => 'application/postscript',
   'etx' => 'text/x-setext',
   'exe' => 'application/octet-stream',
   'ez' => 'application/andrew-inset',
   'flv' => 'video/x-flv',
   'gif' => 'image/gif',
   'gram' => 'application/srgs',
   'grxml' => 'application/srgs+xml',
   'gtar' => 'application/x-gtar',
   'gz' => 'application/x-gzip',
   'hdf' => 'application/x-hdf',
   'hqx' => 'application/mac-binhex40',
   'htm' => 'text/html',
   'html' => 'text/html',
   'ice' => 'x-conference/x-cooltalk',
   'ico' => 'image/x-icon',
   'ics' => 'text/calendar',
   'ief' => 'image/ief',
   'ifb' => 'text/calendar',
   'iges' => 'model/iges',
   'igs' => 'model/iges',
   'jnlp' => 'application/x-java-jnlp-file',
   'jp2' => 'image/jp2',
   'jpe' => 'image/jpeg',
   'jpeg' => 'image/jpeg',
   'jpg' => 'image/jpeg',
   'js' => 'application/x-javascript',
   'kar' => 'audio/midi',
   'latex' => 'application/x-latex',
   'lha' => 'application/octet-stream',
   'lzh' => 'application/octet-stream',
   'm3u' => 'audio/x-mpegurl',
   'm4a' => 'audio/mp4a-latm',
   'm4p' => 'audio/mp4a-latm',
   'm4u' => 'video/vnd.mpegurl',
   'm4v' => 'video/x-m4v',
   'mac' => 'image/x-macpaint',
   'man' => 'application/x-troff-man',
   'mathml' => 'application/mathml+xml',
   'me' => 'application/x-troff-me',
   'mesh' => 'model/mesh',
   'mid' => 'audio/midi',
   'midi' => 'audio/midi',
   'mif' => 'application/vnd.mif',
   'mov' => 'video/quicktime',
   'movie' => 'video/x-sgi-movie',
   'mp2' => 'audio/mpeg',
   'mp3' => 'audio/mpeg',
   'mp4' => 'video/mp4',
   'mpe' => 'video/mpeg',
   'mpeg' => 'video/mpeg',
   'mpg' => 'video/mpeg',
   'mpga' => 'audio/mpeg',
   'ms' => 'application/x-troff-ms',
   'msh' => 'model/mesh',
   'mxu' => 'video/vnd.mpegurl',
   'nc' => 'application/x-netcdf',
   'oda' => 'application/oda',
   'ogg' => 'application/ogg',
   'ogv' => 'video/ogv',
   'pbm' => 'image/x-portable-bitmap',
   'pct' => 'image/pict',
   'pdb' => 'chemical/x-pdb',
   'pdf' => 'application/pdf',
   'pgm' => 'image/x-portable-graymap',
   'pgn' => 'application/x-chess-pgn',
   'pic' => 'image/pict',
   'pict' => 'image/pict',
   'png' => 'image/png',
   'pnm' => 'image/x-portable-anymap',
   'pnt' => 'image/x-macpaint',
   'pntg' => 'image/x-macpaint',
   'ppm' => 'image/x-portable-pixmap',
   'ppt' => 'application/vnd.ms-powerpoint',
   'ps' => 'application/postscript',
   'qt' => 'video/quicktime',
   'qti' => 'image/x-quicktime',
   'qtif' => 'image/x-quicktime',
   'ra' => 'audio/x-pn-realaudio',
   'ram' => 'audio/x-pn-realaudio',
   'ras' => 'image/x-cmu-raster',
   'rdf' => 'application/rdf+xml',
   'rgb' => 'image/x-rgb',
   'rm' => 'application/vnd.rn-realmedia',
   'roff' => 'application/x-troff',
   'rtf' => 'text/rtf',
   'rtx' => 'text/richtext',
   'sgm' => 'text/sgml',
   'sgml' => 'text/sgml',
   'sh' => 'application/x-sh',
   'shar' => 'application/x-shar',
   'silo' => 'model/mesh',
   'sit' => 'application/x-stuffit',
   'skd' => 'application/x-koan',
   'skm' => 'application/x-koan',
   'skp' => 'application/x-koan',
   'skt' => 'application/x-koan',
   'smi' => 'application/smil',
   'smil' => 'application/smil',
   'snd' => 'audio/basic',
   'so' => 'application/octet-stream',
   'spl' => 'application/x-futuresplash',
   'src' => 'application/x-wais-source',
   'sv4cpio' => 'application/x-sv4cpio',
   'sv4crc' => 'application/x-sv4crc',
   'svg' => 'image/svg+xml',
   'swf' => 'application/x-shockwave-flash',
   't' => 'application/x-troff',
   'tar' => 'application/x-tar',
   'tcl' => 'application/x-tcl',
   'tex' => 'application/x-tex',
   'texi' => 'application/x-texinfo',
   'texinfo' => 'application/x-texinfo',
   'tif' => 'image/tiff',
   'tiff' => 'image/tiff',
   'tr' => 'application/x-troff',
   'tsv' => 'text/tab-separated-values',
   'txt' => 'text/plain',
   'ustar' => 'application/x-ustar',
   'vcd' => 'application/x-cdlink',
   'vrml' => 'model/vrml',
   'vxml' => 'application/voicexml+xml',
   'wav' => 'audio/x-wav',
   'wbmp' => 'image/vnd.wap.wbmp',
   'wbxml' => 'application/vnd.wap.wbxml',
   'webm' => 'video/webm',
   'wml' => 'text/vnd.wap.wml',
   'wmlc' => 'application/vnd.wap.wmlc',
   'wmls' => 'text/vnd.wap.wmlscript',
   'wmlsc' => 'application/vnd.wap.wmlscriptc',
   'wmv' => 'video/x-ms-wmv',
   'wrl' => 'model/vrml',
   'xbm' => 'image/x-xbitmap',
   'xht' => 'application/xhtml+xml',
   'xhtml' => 'application/xhtml+xml',
   'xls' => 'application/vnd.ms-excel',
   'xml' => 'application/xml',
   'xpm' => 'image/x-xpixmap',
   'xsl' => 'application/xml',
   'xslt' => 'application/xslt+xml',
   'xul' => 'application/vnd.mozilla.xul+xml',
   'xwd' => 'image/x-xwindowdump',
   'xyz' => 'chemical/x-xyz',
   'zip' => 'application/zip',
 );
 /**
  * Attempt to match the file extension to a known mime-type.
  *
  * @param string $ext (Required) The file extension to attempt to map.
  * @return string The mime-type to use for the file extension.
  */
 public static function get_mimetype($ext)
 {
   $ext = strtolower($ext); // Make sure the passed in extension is lowercase
   return isset(self::$mime_types[$ext]) ? self::$mime_types[$ext] : 'application/octet-stream';
 }
}

希望本文所述对大家PHP程序设计有所帮助。

来源：http://www.cnblogs.com/wangxusummer/p/6409607.html