(PECL sphinx >= 0.1.0)
SphinxClient::setRankingMode — Set ranking mode
Sets ranking mode. Only available in SPH_MATCH_EXTENDED2 matching mode.
| Constant | Description |
|---|---|
| SPH_RANK_PROXIMITY_BM25 | Default ranking mode which uses both proximity and BM25 ranking. |
| SPH_RANK_BM25 | Statistical ranking mode which uses BM25 ranking only (similar to most of other full-text engines). This mode is faster, but may result in worse quality on queries which contain more than 1 keyword. |
| SPH_RANK_NONE | Disables ranking. This mode is the fastest. It is essentially equivalent to boolean searching, a weight of 1 is assigned to all matches. |
Ranking mode.
成功时返回 TRUE， 或者在失败时返回 FALSE.