PHP redis实现超迷你全文检索

//自动补全

  //不限输入汉字的前后顺序: 输入"国三杀" => 输出 "三国杀"

  functiongetAutoComplate()

  {

    //$word = $this->input->post('word');

    $word='三国';

    if(empty($word)) {

      exit('0');

    }

    $intWordLength= mb_strlen($word,'UTF-8');

    $this->load->library('iredis');

    if(1 ==$intWordLength) {

      $arrGid=$this->iredis->getAutoComplate($word);

    }else{

      $arrGid=array();

      for($i=0;$i<$intWordLength;$i++) {

        $strOne= mb_substr($word,$i, 1,'UTF-8');

        $arrGidTmp=$this->iredis->getAutoComplate($strOne);

        $arrGid=empty($arrGid) ?$arrGidTmp:array_intersect($arrGid,$arrGidTmp);//求交集,因为传入的参数个数不确定,因此不能直接求交集

      }

    }

    $arrGame=$this->gamemodel->getGameNameForAutoComplate($arrGid);

    // var_dump($arrGame);exit;

    $jsonGame= json_encode($arrGame);

    exit($jsonGame);

  }

  //自动补全, 建立索引

  functionsetAutoComplate()

  {

    $arrGame=$this->gamemodel->getAllGameNameForAutoComplate();

    $arrIndex=array();

    foreach($arrGameas$gid=>$gname) {

      $intGnameLength= mb_strlen($gname,'UTF-8');

      for($i=0;$i<$intGnameLength;$i++) {

        $strOne= mb_substr($gname,$i, 1,'UTF-8');

        $arrIndex[$strOne][] =$gid;

      }

    }

    $this->load->library('iredis');

    foreach($arrIndexas$word=>$arrGid) {

      foreach($arrGidas$gid) {

        $this->iredis->setAutoComplate($word,$gid);

      }

    }

  }

//自动补全功能

  publicfunctionsetAutoComplate($key,$value)

  {

    $youxikey='youxi_'.$key;

    $this->sAdd($youxikey,$value);

  }

  //自动补全功能

  publicfunctiongetAutoComplate($key)

  {

    $youxikey='youxi_'.$key;

    return$this->sMembers($youxikey);

  }