mb_get_info() returns internal setting parameter of mbstring.
If type isn't specified or is specified to "all", an array having the elements "internal_encoding", "http_output", "http_input", "func_overload" will be returned.
If type is specified for "http_output", "http_input", "internal_encoding", "func_overload", the specified setting parameter will be returned.
See also mb_internal_encoding(), mb_http_output().