use Db in laravel code example

Example 1: db import laravel

use Illuminate\Support\Facades\DB;

Example 2: TRANSACTON LARAVEL QUERY BUILDER

DB::beginTransaction();

try {
    DB::insert(...);    
    DB::commit();
} catch (\Throwable $e) {
    DB::rollback();
    throw $e;
}

Example 3: DB: in eloquent using sql

$results = DB::select('select * from users where id = :id', ['id' => 1]);