str_isnumber      151 ext/socket/getaddrinfo.c static int str_isnumber __P((const char *));
str_isnumber      374 ext/socket/getaddrinfo.c 		if (str_isnumber(servname)) {
str_isnumber      939 ext/socket/socket.c     if (socktype_hack && hints->ai_socktype == 0 && hints->ai_flags == 0 && str_isnumber(portp)) {