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getservbyname

(PHP 4, PHP 5)

getservbynameGet port number associated with an Internet service and protocol

Description

int getservbyname ( string $service , string $protocol )

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

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Parameters

service

The Internet service name, as a string.

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() 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";
}
?>

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