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);