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().