(PHP 4, PHP 5 <= 5.0.5)
yp_match — Returns the matched line
Returns the value associated with the passed key out of the specified map.
The NIS domain name.
The NIS map.
This key must be exact.
Returns the value, or FALSE on errors.
Example #1 Example for NIS match
<?php
$entry = yp_match($domain, "passwd.byname", "joe");
echo "Matched entry is: " . $entry;
?>
以上例程的输出类似于：
joe:##joe:11111:100:Joe User:/home/j/joe:/usr/local/bin/bash