Руководство по PHP
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yp_get_default_domain

(PHP 3 >= 3.0.7, PHP 4, PHP 5 <= 5.0.4)

yp_get_default_domain -- Fetches the machine's default NIS domain

Description

string yp_get_default_domain ( void )

yp_get_default_domain() returns the default domain of the node or FALSE. Can be used as the domain parameter for successive NIS calls.

A NIS domain can be described a group of NIS maps. Every host that needs to look up information binds itself to a certain domain. Refer to the documents mentioned at the beginning for more detailed information.

Пример 1. Example for the default domain

<?php
$domain = yp_get_default_domain();
echo "Default NIS domain is: " . $domain;
?>

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