php实现搜索类封装示例_php实例

本文为大家分享了php实现搜索类封装示例，供大家参考，具体内容如下

<?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();
  }

}

?>

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