(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;
?>
上例的输出类似于：
joe:##joe:11111:100:Joe User:/home/j/joe:/usr/local/bin/bash