getservbyname(3) [php man page]

GETSERVBYNAME(3)							 1							  GETSERVBYNAME(3)

getservbyname - Get port number associated with an Internet service and protocol

SYNOPSIS

       int getservbyname (string  $service, string  $protocol)

DESCRIPTION

       getservbyname(3) returns the Internet port which corresponds to $service for the specified $protocol as per /etc/services.

PARAMETERS

	      o $service
		- The Internet service name, as a string.

	      o $protocol
		-$protocol is either "tcp" or "udp" (in lowercase).

RETURN VALUES

	Returns the port number, or FALSE if $service or $protocol is not found.

EXAMPLES

       Example #1

	      getservbyname(3) example

	      <?php
	      $services = array('http', 'ftp', 'ssh', 'telnet', 'imap',

	      foreach ($services as $service) {
		  $port = getservbyname($service, 'tcp');
		  echo $service . ": " . $port . "<br />
";
	      }
	      ?>

SEE ALSO

       getservbyport(3), http://www.iana.org/assignments/port-numbers for a complete list of port numbers. .

PHP Documentation Group 													  GETSERVBYNAME(3)

services(4)							   File Formats 						       services(4)

NAME

       services - Internet services and aliases

SYNOPSIS

       /etc/inet/services

       /etc/services

DESCRIPTION

       The services file  is a local source of information regarding each service available through the Internet. The services file can be used in
       conjunction with or instead of other services sources, including the NIS maps "services.byname" and the NIS+  table  "services."   Programs
       use the getservbyname(3SOCKET) routines to access this information.

       The services file contains an entry for each service. Each entry has the form:

	 service-name	port/protocol	aliases

       service-name	This is the official Internet service name.

       port/protocol	This field is composed of the port number and protocol through which the service is provided, for instance, 512/tcp.

       aliases		This is a list of alternate names by which the service might be requested.

       Fields  can  be separated by any number of SPACE and/or TAB characters. A number sign (#) indicates the beginning of a comment; any charac-
       ters that follow the comment character up to the end of the line are not interpreted by routines which search the file.

       Service names may contain any printable character other than a field delimiter, a NEWLINE, or a comment character.

       Any changes to a port assignment do not affect the actual port registration of the service.

FILES

       /etc/nsswitch.conf    configuration file for name-service switch

SEE ALSO

       getservbyname(3SOCKET), inetd.conf(4), nsswitch.conf(4)

NOTES

       /etc/inet/services is the official SVR4 name of the services file.  The symbolic link /etc/services exists for BSD compatibility.

SunOS 5.11							    12 Oct 2000 						       services(4)