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\';
  }
}

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