(PHP 4 <= 4.1.0, PECL dbplus >= 0.9)
dbplus_last — Get last tuple from relation
$relation
   , array &$tuple
   )
   Reads the data for the last tuple for the given
   relation, makes it the current tuple and pass it
   back as an associative array in tuple.
  
   Returns DBPLUS_ERR_NOERR on success or a db++ error
   code on failure. 
  
This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk.