如果表有一个自动递增的id，使用insertGetId方法插入一条记录，然后检索id:

$id = DB::table('users')->insertGetId([
    'email' => 'john@example.com',
    'votes' => 0
]);

参考:https://laravel.com/docs/5.1/queries插入

For anyone who also likes how Jeffrey Way uses Model::create() in his Laracasts 5 tutorials, where he just sends the Request straight into the database without explicitly setting each field in the controller, and using the model's $fillable for mass assignment (very important, for anyone new and using this way): I read a lot of people using insertGetId() but unfortunately this does not respect the $fillable whitelist so you'll get errors with it trying to insert _token and anything that isn't a field in the database, end up setting things you want to filter, etc. That bummed me out, because I want to use mass assignment and overall write less code when possible. Fortunately Eloquent's create method just wraps the save method (what @xdazz cited above), so you can still pull the last created ID...

public function store() {

    $input = Request::all();
    $id = Company::create($input)->id;

    return redirect('company/'.$id);
}

xdazz在这种情况下是正确的，但为了将来可能使用DB::statement或DB::insert的访问者的利益，还有另一种方法:

DB::getPdo()->lastInsertId();

这就是它是如何为我工作的，family_id是自动增量的主键，我使用Laravel7

    public function store(Request $request){
        $family = new Family();
        $family->family_name = $request->get('FamilyName');
        $family->family_no = $request->get('FamilyNo');
        $family->save();
        //family_id is the primary key and auto increment
        return redirect('/family/detail/' .  $family->family_id);
    }

同样在Model Family文件中，应该将增量设置为true，否则上面的$ Family——>family_id将返回空

    public $incrementing = true;
  

在Laravel 5.2中，我会让它尽可能的干净:

public function saveContact(Request $request, Contact $contact)
{
   $create = $contact->create($request->all());
   return response()->json($create->id,  201);
}

后

$data->save()

$data->id会给你插入的id，

注意:如果您的自增列名是sno，那么您应该使用 $data->sno而不是$data->id