Estensione mime_types validi

/*
    ttf   as "application/x-font-ttf" or "application/x-font-truetype"
    otf   as "application/x-font-opentype"
    woff  as "application/font-woff"
    woff2 as "application/font-woff2" (proposed by W3C)
    eot   as "application/vnd.ms-fontobject"
*/
add_filter('upload_mimes', 'sator_mime_types', 10);
function sator_mime_types($mime_types){
    $mime_types['ttf'] = "application/x-font-ttf";
    $mime_types['otf'] = "application/x-font-opentype";
    $mime_types['woff'] = "application/font-woff";
    $mime_types['woff2'] = "application/font-woff2";
    $mime_types['eot'] = "application/vnd.ms-fontobject";

    return $mime_types;
}