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感兴趣的小伙伴，下面一起跟随脚本之家 jb51.cc的小编来看看吧。
经测试代码如下：
/**
* 根据文件后缀获取其mine类型
*
* @author 脚本之家 jb51.cc jb51.cc
* @param string $extension
* @return string
*/
function get_mimetype($extension) {
$ct['htm'] = 'text/html';
$ct['html'] = 'text/html';
$ct['txt'] = 'text/plain';
$ct['asc'] = 'text/plain';
$ct['bmp'] = 'image/bmp';
$ct['gif'] = 'image/gif';
$ct['jpeg'] = 'image/jpeg';
$ct['jpg'] = 'image/jpeg';
$ct['jpe'] = 'image/jpeg';
$ct['png'] = 'image/png';
$ct['ico'] = 'image/vnd.microsoft.icon';
$ct['mpeg'] = 'video/mpeg';
$ct['mpg'] = 'video/mpeg';
$ct['mpe'] = 'video/mpeg';
$ct['qt'] = 'video/quicktime';
$ct['mov'] = 'video/quicktime';
$ct['avi'] = 'video/x-msvideo';
$ct['wmv'] = 'video/x-ms-wmv';
$ct['mp2'] = 'audio/mpeg';
$ct['mp3'] = 'audio/mpeg';
$ct['rm'] = 'audio/x-pn-realaudio';
$ct['ram'] = 'audio/x-pn-realaudio';
$ct['rpm'] = 'audio/x-pn-realaudio-plugin';
$ct['ra'] = 'audio/x-realaudio';
$ct['wav'] = 'audio/x-wav';
$ct['css'] = 'text/css';
$ct['zip'] = 'application/zip';
$ct['pdf'] = 'application/pdf';
$ct['doc'] = 'application/msword';
$ct['bin'] = 'application/octet-stream';
$ct['exe'] = 'application/octet-stream';
$ct['class'] = 'application/octet-stream';
$ct['dll'] = 'application/octet-stream';
$ct['xls'] = 'application/vnd.ms-excel';
$ct['ppt'] = 'application/vnd.ms-powerpoint';
$ct['wbxml'] = 'application/vnd.wap.wbxml';
$ct['wmlc'] = 'application/vnd.wap.wmlc';
$ct['wmlsc'] = 'application/vnd.wap.wmlscriptc';
$ct['dvi'] = 'application/x-dvi';
$ct['spl'] = 'application/x-futuresplash';
$ct['gtar'] = 'application/x-gtar';
$ct['gzip'] = 'application/x-gzip';
$ct['js'] = 'application/x-javascript';
$ct['swf'] = 'application/x-shockwave-flash';
$ct['tar'] = 'application/x-tar';
$ct['xhtml'] = 'application/xhtml+xml';
$ct['au'] = 'audio/basic';
$ct['snd'] = 'audio/basic';
$ct['midi'] = 'audio/midi';
$ct['mid'] = 'audio/midi';
$ct['m3u'] = 'audio/x-mpegurl';
$ct['tiff'] = 'image/tiff';
$ct['tif'] = 'image/tiff';
$ct['rtf'] = 'text/rtf';
$ct['wml'] = 'text/vnd.wap.wml';
$ct['wmls'] = 'text/vnd.wap.wmlscript';
$ct['xsl'] = 'text/xml';
$ct['xml'] = 'text/xml';
return isset($ct[strtolower($extension)]) ? $ct[strtolower($extension)] : 'text/html';
}
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