(PECL sphinx >= 0.1.0) Set a range of accepted document IDs
(PECL sphinx >= 0.1.0) Set grouping attribute
(PECL sphinx >= 0.1.0) Set attribute name for per-group distinct values count calculations
(PECL sphinx >= 0.1.0) Extract keywords from query
(PECL sphinx >= 0.1.0) Set searchd host and port
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