(PHP 3 >= 3.0.7, PHP 4, PHP 5 <= 5.0.4)
yp_master() returns the machine name of the master NIS server for a map.
Example 1. Example for the NIS master
<?php$number = yp_master($domain, $mapname);echo "Master for this map is: " . $master;?>
See also yp_get_default_domain().