Thinkphp5.0第三篇

Posted 2020-11-13 陈国松

批量插入数据

//新增一条数据的方法

    public function add()

    {

        /*$user =new UserModel();

        $user->id=1;

        $user->name='陈国松';

       $user->email='[e-mail]';

        $user->birthday=strtotime('1989-7-11');

      if( $user->save()){

          return '用户新增成功';

      }else{

         return '用户新增失败';

      }*/



      $user['name']='看云';

      $user['email']='[e-mail]';

      $user['birthday']=strtotime('1991-6-12');

     if($result=UserModel::create($user)){

         return '新增成功';

     } else{

         return '新增失败';

     }

    }

    //批量新增数据

    public function addList(){

        $user=new UserModel();

        $list=[

            ['name'=>'张三','email'=>'[e-mail]','birthday'=>strtotime('1978-8-9')],

            ['name'=>'李四','email'=>'[e-mail]','birthday'=>strtotime('1977-8-9')],

        ];

      if( $user->saveAll($list)){

           return '批量插入成功';

       }else{

          return '批量插入失败';
       }
       }

模型操作之更新数据

查找并更新

        $user=UserModel::get(1);
        $user->name='陈松';
        $user->email='[e-mail]';
        $user->save();
        if($user->save()){
           return '成功';
        }else{
            return '失败';
        }

直接更新数据

$user=new UserModel();

$user->save(['name'=>'刘涛','email'=>'[e-mail]'],['name'=>'陈国松']);

批量更新

$user =new UserModel();

$list=[

    ['id'=>1, 'name'=>'thinkphp', 'email'=>'[e-mail]'],

['id'=>2, 'name'=>'onethink', 'email'=>'[e-mail]']

] ;

$user->isUpdate()->saveAll($list);

数据库类更新数据

$user = new UserModel;
$user->where('name', '刘涛')->update(['name' => 'thinkphp']);

静态方法

UserModel::where('name','thinkphp')->update(['name'=>'陈国松','email'=>'[e-mail]','birthday'=>strtotime('1997-9-16')]);

查询

取出主键为１的数据

    $user=UserModel::get(1);
    dump($user);
    echo $user->name.'</br>'.$user->email.'</br>';

使用数组查询

    $user =UserModel::get(['name'=>'陈国松']);
    echo $user->email;

实例化模型后调用查询方法

   $user=new UserModel;
    $result=$user->where('name','陈国松')->find();
    echo $result->name;

     $user =new Usermodel;
    $result=$user->where('name','陈国松')->find();
echo $result->birthday;

根据主键查询多个数据

     $list=UserModel::all([1,2,3]);
     foreach($list as $key=>$value){
       echo $value->name.'</br>';
 echo $value->birthday.'</br>';
   echo $value->email.'</br>';
 }

    $user =new UserModel;
$result=$user->where('name','陈国松')->limit(2)->order('id','desc')->select();
 foreach($result as $key=>$value){
 echo $value['name'].'</br>';
 echo $value['email'].'</br>'; }

聚合

聚合函数的调用

    $user=new UserModel;
    echo $user->Count('id').'</br>';
    echo $user->Max('id');

静态调用大全

User::count();
User::where('status','>',0)->count();
User::where('status',1)->avg('score');
User::max('score');

动态调用大全

$user = new User;
$user->count();
$user->where('status','>',0)->count();
$user->where('status',1)->avg('score');
$user->max('score');