public static function isSubType($subType, $mimeType) {
        return in_array(self::_findMimeType($mimeType), self::getSubTypeList($subType));
    }
public static function isSubType($subType, $mimeType) {
        return in_array(self::_findMimeType($mimeType), self::getSubTypeList($subType));
    }
public static function isSubType ( $ subType , $ mimeType ) { return in_array ( self :: _findMimeType ( $ mimeType ) , self :: getSubTypeList ( $ subType ) ) ; }
Return true if the mime type is part of a sub-type.

@param string $subType
@param string $mimeType
@return bool
Return true if the mime type is part of a sub - type .