You can learn more about working with files here (link to files overview). The File MIME types helper contains useful functions when working specifically with MIME types.

Loading the Helper

$fh = Loader::helper(‘mime’);

Methods

$r = $fh->mimeFromExtension($extension)

Returns a MIME type given an extension

print $fh->mimeFromExtension(‘.jpg’); // outputs ‘image/jpeg’

$extension = $fh->mimeToExtension($mime)

Converts a known mime-type into its common file extension.