ThinkPhp学习07

 1 public  function show() {
 2         $m=M(‘User‘);
 3     
 4     //    $arr=$m->find(2); //查找id=2的数据，find只能返回一条数据
 5     //2.SELECT * FROM `tp_user` WHERE ( sex=1 )
 6     //    $arr=$m->where(‘sex=1‘)->select();
 7 
 8     //3.INSERT INTO `tp_user` (`username`,`sex`) VALUES (‘王五‘,1)    
 9     //    $m->username22="王四";
10     //    $m->seeee=1;  //如果对应的字段名不正确则不加入，所以要设置好是否为空，或者默认值
11     //    $arr=$m->add();  //返回添加成功对应的id  
12         
13         
14         //4.DELETE FROM `tp_user` WHERE ( `id` = 2 )
15         //$arr=$m->delete(2);  //返回删除成功条数
16         
17         //3.DELETE FROM `tp_user` WHERE ( sex=0 )
18         //$arr=$m->where(‘sex=0‘)->delete();   
19         
20     //    2.UPDATE `tp_user` SET `username`=‘李明‘,`sex`=0 WHERE ( `id` = 1 )
21         $data[‘id‘]=4;
22         $data[‘username‘]=‘李明2‘;
23         $data[‘sex‘]=0;
24         $arr=$m->save($data);  //返回成功执行数
25         echo $arr;
26         
27         $this->display();
28     }