我试图找到一个参考，显示"TYPES"的不同名称就像$_FILES["file"]["type"] == "image/gif"，但我正在寻找csv, ms excel, mac数字，ms word等。
我在php.net或google上找不到任何东西。我很可能叫错了。
我应该找的东西叫什么?
这实际上在PHP手册中有解释。
来自http://php.net/manual/en/features.file-upload.post-method.php(强调我的)
$_FILES['userfile']['type']:如果浏览器提供了该信息，则文件的mime类型。例如"image/gif"。然而，PHP端不会检查此mime类型，因此不要认为它的值是理所当然的。
所以你要找的术语是MIME TYPE。把它放到谷歌上可能会让你最终进入维基百科的https://en.wikipedia.org/wiki/Internet_media_type
Internet媒体类型[1]是Internet上文件格式的两部分标识符。标识符最初是在RFC 2046中定义的，用于通过SMTP发送的电子邮件，但它们的使用已经扩展到其他协议，如HTTP、RTP和SIP。这些类型被称为MIME类型，有时也被称为content -type，在几个协议的报头名称之后，其值就是这种类型。
文章还指出
IANA管理媒体类型官方注册表
点击链接进入
- https://www.iana.org/assignments/media-types
，其中包含您正在查找的列表。请注意，查看该列表基本上是没有意义的，除非您想找出特定文件格式的官方mime类型是什么。
附带说明:如果您想验证/检测文件的mime类型，请检查我在
中提供的代码。- PHP如何检查文件是mp3还是图像文件?
您正在寻找MIME类型。但是请注意，您不应该信任$_FILES['...']['type']。相反，您应该分析文件内容本身以确保它们是正确的格式。
在一个论坛上发现了下面的列表，似乎足够完整，可以在这里发布
'hqx' => 'application/mac-binhex40'
'cpt' => 'application/mac-compactpro'
'csv' => 'text/x-comma-separated-values', 'application/vnd.ms-excel'
'bin' => 'application/macbinary'
'dms' => 'application/octet-stream'
'lha' => 'application/octet-stream'
'lzh' => 'application/octet-stream'
'exe' => 'application/octet-stream'
'class' => 'application/octet-stream'
'psd' => 'application/x-photoshop'
'so' => 'application/octet-stream'
'sea' => 'application/octet-stream'
'dll' => 'application/octet-stream'
'oda' => 'application/oda'
'pdf' => 'application/pdf', 'application/x-download'
'ai' => 'application/postscript'
'eps' => 'application/postscript'
'ps' => 'application/postscript'
'smi' => 'application/smil'
'smil' => 'application/smil'
'mif' => 'application/vnd.mif'
'xls' => 'application/excel', 'application/vnd.ms-excel'
'ppt' => 'application/powerpoint'
'wbxml' => 'application/wbxml'
'wmlc' => 'application/wmlc'
'dcr' => 'application/x-director'
'dir' => 'application/x-director'
'dxr' => 'application/x-director'
'dvi' => 'application/x-dvi'
'gtar' => 'application/x-gtar'
'gz' => 'application/x-gzip'
'php' => 'application/x-httpd-php'
'php4' => 'application/x-httpd-php'
'php3' => 'application/x-httpd-php'
'phtml' => 'application/x-httpd-php'
'phps' => 'application/x-httpd-php-source'
'js' => 'application/x-javascript'
'swf' => 'application/x-shockwave-flash'
'sit' => 'application/x-stuffit'
'tar' => 'application/x-tar'
'tgz' => 'application/x-tar'
'xhtml' => 'application/xhtml+xml'
'xht' => 'application/xhtml+xml'
'zip' => 'application/x-zip', 'application/zip', 'application/x-zip-compressed'
'mid' => 'audio/midi'
'midi' => 'audio/midi'
'mpga' => 'audio/mpeg'
'mp2' => 'audio/mpeg'
'mp3' => 'audio/mpeg'
'aif' => 'audio/x-aiff'
'aiff' => 'audio/x-aiff'
'aifc' => 'audio/x-aiff'
'ram' => 'audio/x-pn-realaudio'
'rm' => 'audio/x-pn-realaudio'
'rpm' => 'audio/x-pn-realaudio-plugin'
'ra' => 'audio/x-realaudio'
'rv' => 'video/vnd.rn-realvideo'
'wav' => 'audio/x-wav'
'bmp' => 'image/bmp'
'gif' => 'image/gif'
'jpeg' => 'image/jpeg', 'image/pjpeg'
'jpg' => 'image/jpeg', 'image/pjpeg'
'jpe' => 'image/jpeg', 'image/pjpeg'
'png' => 'image/png', 'image/x-png'
'tiff' => 'image/tiff'
'tif' => 'image/tiff'
'css' => 'text/css'
'html' => 'text/html'
'htm' => 'text/html'
'shtml' => 'text/html'
'txt' => 'text/plain'
'text' => 'text/plain'
'log' => 'text/plain', 'text/x-log'
'rtx' => 'text/richtext'
'rtf' => 'text/rtf'
'xml' => 'text/xml'
'xsl' => 'text/xml'
'mpeg' => 'video/mpeg'
'mpg' => 'video/mpeg'
'mpe' => 'video/mpeg'
'qt' => 'video/quicktime'
'mov' => 'video/quicktime'
'avi' => 'video/x-msvideo'
'movie' => 'video/x-sgi-movie'
'doc' => 'application/msword'
'word' => 'application/msword', 'application/octet-stream'
'xl' => 'application/excel'
'eml' => 'message/rfc822'