如何封装PHP Xunsearch搜索类以优化性能？

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php SoClass.php

class SoClass{ private $xindex; private $xsearch; private $project;

public function __construct($project) { // 载入引导文件 require_once 'lib/XS.php'; // 初始化 $xs=new XS($project); }}

<?php /** * SoClass.php * 索引与搜索类 */ class SoClass { private $_xindex; private $_xsearch; private $_project; public function __construct($project){ //载入引导文件 require_once 'lib/XS.php'; //初始化 $xs = new XS($project); $this->_project = $project; $this->_xindex = $xs->index; $this->_xsearch = $xs->search; $this->_xsearch->setCharset('UTF-8'); } public function query($keyWord,$row=20,$jnum=0){ $xs = new XS($this->_project); $xs->search->setFuzzy(); $xs->search->setAutoSynonyms(); $xs->search->setQuery($keyWord); //支持同义词搜索，默认打开 $xs->search->setLimit($row, $jnum); //设置返回结果最多为 5 条，并跳过前 10 条 $docs = $xs->search->search(); //执行搜索，将搜索结果文档保存在 $docs 数组中 $count = $xs->search->count(); //获取搜索结果的匹配总数估算值 if($count){ $data = array(); foreach ($docs as $key=>$doc){ $data[$key]['pid'] = $doc->pid; $data[$key]['nid'] = $doc->nid; $data[$key]['category'] = $doc->category; $data[$key]['url'] = $doc->url; $data[$key]['name'] = $xs->search->highlight(htmlspecialchars($doc->name)); $data[$key]['message'] = $xs->search->highlight(htmlspecialchars($doc->message)); } return array('data'=>$data,'count'=>$count); } return array(); } public function hotWord($num,$type='lastnum'){ return $this->_xsearch->getHotQuery($num,$type); } public function expanded($keyWord){ return $this->_xsearch->getExpandedQuery($keyWord); } public function lastCount(){ return $this->_xsearch->getLastCount(); } public function index($data,$update=0){ // 创建文档对象 $doc = new XSDocument; $doc->setFields($data); // 添加或更新到索引数据库中 if(!$update){ $this->_xindex->add($doc); }else{ $this->_xindex->update($doc); } } public function delete($idArray){ //删除索引(主键删除array('1','2','3')) $this->_xindex->del($idArray); } public function addSynonym($word1,$word2){ $this->_xindex->addSynonym($word1,$word2); } public function clearIndex(){ $this->_xindex->clean(); } } ?>