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getservbyport

Name

getservbyport — Gets the name of a service running on a port.

Synopsis

mixed getservbyport(port, protocol_type);
int port: Name of the service
string protocol_type: Name of the protocol; either tcp or udp

Returns

Service name; FALSE on error

Description

getservbyport() returns the name of the service running on a port under the given protocol, as defined in your system's /etc/services or c:\windows\servicesfile. If the protocol is not recognized, the function returns FALSE.

Version

PHP Version: 4.0b4+

See also

getservbyname()

Example

Example 841. Find out what service listens on a given port

<?php
$port = 23;
$protocol = 'tcp';

$service = getservbyport ($port, $protocol)
    or die ("No service is assigned to port $port using the $protocol protocol.");

echo "Port $port is assigned to the $service service using the $protocol protocol.";
?>



PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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