application/index/controller/Ajax.php

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<?php
//声明当前控制器的目录位置
namespace app\index\controller;
//加载TP定义的控制器类，方便继承。
//use think\Controller;
//加载数据库类，方便直接用其工具。think相当于之前用于二开的lib类库
//use app\index\controller\Base;
//use think\Db;
//use think\Session;
//use think\Request;
//use think\Cache;
use app\admin\model\NeedSpace;
use app\admin\model\GoodsSpace;
use app\admin\model\ShopSpace;
use app\admin\model\ArticleSpace;
//use app\admin\lib\lang\Hylang;
//use think\Cache;
//一个类 默认对应 view视图文件夹的 index 文件夹，也代表一个TP所称的控制器
class Ajax extends Base
{   
    //子类和父类都有initialize方法则会覆盖父类的
    
    public function index()
    {  
	return $this->fetch();
    }
  
      //测试
    public function test()
    {  
        $data="";
        $sign="";
        $res="";
         $result = (bool)openssl_verify($data, base64_decode($sign), $res, OPENSSL_ALGO_SHA256);
         return $result;
    }
    

      public function search_keyword()
    {  
          //得到前台发送的字母单词
         $key_word= request()->param('value');
         if(!$key_word){ return $res;die;}
                   $NeedSpace= NeedSpace::where(['need_name' =>['like','%'.$key_word.'%']])->where('need_status','>',0)->order('update_time', 'desc')->select();
                   $GoodsSpace= GoodsSpace::where(['goods_name' =>['like','%'.$key_word.'%']])->where('goods_status','=',2)->order('update_time', 'desc')->select();
            $ShopSpace = ShopSpace::where(['shop_name' =>['like','%'.$key_word.'%']])->where('status','=',2)->order('update_time', 'desc')->select();

          //输出过滤后的数祖
         $res=$this->get_res($NeedSpace,"need_detail","need_name","需求","need_list",$key_word);
          $res.=$this->get_res($GoodsSpace,"goods_detail","goods_name","商品","goods_list",$key_word);
            $res.=$this->get_res($ShopSpace,"shop_detail","shop_name","服务商","shop_list",$key_word);
            return $res;
    }
    //输出过滤后的数祖
     public function get_res($space,$action,$show_filed,$name,$list_action,$key_word)
    {  
          if($space){
         $url ="/index/".$action."/index/id/";
            foreach ($space as $key => $value) {
           if($key<6){