(PECL sphinx >= 0.1.0)
SphinxClient::setArrayResult — Change the format of result set array
$array_result = false
   )Controls the format of search results set arrays (whether matches should be returned as an array or a hash).
array_result
       If array_result is FALSE, matches
       are returned as a hash with document IDs as keys, and other information (weight,
       attributes) as values. If array_result is TRUE, matches 
       are returned as a plain array with complete per-match information including
       document IDs.
      
   Always returns TRUE.