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This document uses PHP Chinese website manual Release
(PHP 4, PHP 5)
getservbyname — Get port number associated with an Internet service and protocol
$service
, string $protocol
) getservbyname() returns the Internet port
which corresponds to service
for the
specified protocol
as per
/etc/services.
service
The Internet service name, as a string.
protocol
protocol
is either "tcp"
or "udp" (in lowercase).
Returns the port number, or FALSE
if service
or
protocol
is not found.
Example #1 getservbyname() example
<?php
$services = array( 'http' , 'ftp' , 'ssh' , 'telnet' , 'imap' ,
'smtp' , 'nicname' , 'gopher' , 'finger' , 'pop3' , 'www' );
foreach ( $services as $service ) {
$port = getservbyname ( $service , 'tcp' );
echo $service . ": " . $port . "<br />\n" ;
}
?>