(PECL sphinx >= 0.1.0)
SphinxClient::setLimits — Set offset and limit of the result set
$offset
   , int $limit
   [, int $max_matches = 0
   [, int $cutoff = 0
  ]] )
   Sets offset into server-side result set and amount
   of matches to return to client starting from that offset
   (limit). Can additionally control maximum
   server-side result set size for current query
   (max_matches) and the threshold amount of matches
   to stop searching at (cutoff).
  
offsetResult set offset.
limitAmount of matches to return.
max_matchesControls how much matches searchd will keep in RAM while searching.
cutoff
       Used for advanced performance control. It tells searchd to forcibly 
       stop search query once cutoff matches have been 
       found and processed.
      
   Returns TRUE on success or FALSE on failure.