// aggregations/bucket/terms-aggregation.asciidoc:377 [source, php] ---- $params = [ 'body' => [ 'aggs' => [ 'genres' => [ 'terms' => [ 'field' => 'genre', 'order' => [ 'max_play_count' => 'desc', ], ], 'aggs' => [ 'max_play_count' => [ 'max' => [ 'field' => 'play_count', ], ], ], ], ], ], ]; $response = $client->search($params); ----