/** * Gives the database a hint about the query * * @param mixed $index - Index to use for the query. If a string is * passed, it should correspond to an index name. If an array or object * is passed, it should correspond to the specification used to create * the index (i.e. the first argument to * MongoCollection::ensureIndex()). * * @return MongoCursor - Returns this cursor. */ public function hint($index) { if (is_object($index)) { $index = get_object_vars($index); } if (is_array($index)) { $index = MongoCollection::_toIndexString($index); } $this->query['$hint'] = $index; return $this; }