laravel 返回值

先理解几个概念:

1. StdClass 对象 => 基础的对象
2. Eloquent 模型对象 (Model 对象) => 和模型相关的类对象
3. Eloquent 集合 => 可以简单理解为对象数组，里面的每一个元素都是一个 Model 对象

 

DB Facades

1. $users = DB::table('users')->get(); 返回值：数组结果，其中每一个结果都是 StdClass
2. $user = DB::table('users')->first();
   返回值：单个 StdClass 实例

 

Eloquent

1. $user = User::first(); 返回值：Eloquent 对象 `
2. $user = User::find(); 返回值：Eloquent 对象 `
3. $users = User::get(); 返回值：Eloquent 集合
4. $users = User::all(); 返回值：Eloquent 集合
5. $user = User::create($data); 返回值：Eloquent 对象

6. $user = new User();
   $user->name = "admin"
   $user->save();

   返回值：Eloquent 对象

7. $result = User::insert($data); 返回值：bool
8. $result = $user->delete(); 返回值：bool
9. $count = User::destroy([1, 2]); 返回值：删除记录数
10. $count = User::where('id', '>', 1)->delete(); 返回值：删除记录数
11. $count = User::where('id', '>', 10)->update(['status' => 1]);
    返回值：更新记录数
12. $count = User::where('id', '>', 10)->increment('age', 1);
    返回值：更新记录数