yp_match
    (PHP 3>= 3.0.7, PHP 4 , PHP 5)
yp_match -- Returns the matched line
Description
string 
yp_match ( string domain, string map, string key)
     yp_match() returns the value associated with
     the passed key out of the specified map or FALSE. This key must
     be exact.
     
Example 1. Example for NIS match 
<?php $entry = yp_match($domain, "passwd.byname", "joe"); echo "Matched entry is: " . $entry; ?>
 |  
 
       The above code will produce :
       joe:##joe:11111:100:Joe User:/home/j/joe:/usr/local/bin/bash  |  
  | 
    
     See also yp_get_default_domain().