laravel 操作数据库常用函数的返回值方法

DB::table('users')->insert(
 ['name' => '上官帝文1', 'age' => 99]
);
DB::table('users')->insertGetId(
 ['name' => '上官帝文2', 'age' => 98]
);

DB::table('users')->where('id', 1)
 ->update(['name' => '上官帝文3']);
DB::table('users')->where('age', '>', 55)->delete(); 
DB::table('users')->whereIn('age', [99,98,97])->delete(); 

DB::table('testtable')->get();

DB::table('testtable')->first();

DB::table('testtable')->paginate();
$total = 2;    //用于每页显示几条数据，一般是前台动态传来的
$result = DB::table('testtable')->paginate($total);
dd($result);