mb_http_input() returns result
of HTTP input character encoding detection.
type: Input string
specifies input type. "G" for GET, "P" for POST, "C" for
COOKIE. If type is omitted, it returns last input type
processed.
Return Value: Character encoding name. If mb_http_input() does not process specified
HTTP input, it returns
FALSE.
See also mb_internal_encoding(),
mb_http_output(),
mb_detect_order().