private function _checkWordCacheSize() { if (sizeof(WLPlugSearchEngineSqlSearch::$s_word_cache) > ($vn_max_size = $this->getOption('maxWordCacheSize'))) { WLPlugSearchEngineSqlSearch::$s_word_cache = array_slice(WLPlugSearchEngineSqlSearch::$s_word_cache, 0, $vn_max_size * $this->getOption('cacheCleanFactor'), true); } }