http_match_request_header Match any header &reftitle.description; boolhttp_match_request_header stringheader stringvalue boolmatch_case = FALSE Match an incoming HTTP header. &reftitle.parameters; header The header name (case-insensitive) value The header value that should be compared match_case Whether the value should be compared case sensitively &reftitle.returnvalues; Returns TRUE if header value matches, else FALSE.