[PHP][thinkphp5] 学习一：增删改查

Posted 2020-09-17 LeePC

 1 <?php
 2 namespace app\index\controller;
 3 
 4 use think\Controller;
 5 use think\Db;
 6 
 7 class Test extends Controller
 8 {
 9 
10     public function index()
11     {
12         $name ="Hello word TP5";
13         
14         $this->assign(‘name‘,$name);
15 
16         return $this->fetch();
17     }
18 
19     public function select()
20     {
21         //增
22         //$res = DB::name(‘lee_user‘)->insert([‘uname‘=>‘lpc‘]);
23         $res = DB::execute("insert into lee_user(uname) values(:uname) ",[‘uname‘=>‘tp5‘]);
24         
25         //删
26         //$res = DB::name(‘lee_user‘)->delete(3);//括号里默认是ID
27         //$res = DB::name(‘lee_user‘)->delete([‘uname‘=>5]);//这个就执行成功啦,删除ID是5的
28         //$res = DB::name(‘lee_user‘)->delete(‘uname‘=>2);//这就没执行成功
29         
30         //改
31         // $res = DB::query(" update lee_user set uname=‘23‘ where uid = 4");
32          if($res)
33          return $this->fetch(‘index‘); 
34 
35         //查询
36         // $data = DB::name(‘lee_user‘)->find();
37         // $this->assign(‘data‘,$data);
38         //return $this->fetch(‘add‘);
39     }
40 }