PHP

get id user login laravel

use Auth;
$user_id = Auth::user()->id;

how login one user with id in laravel

public function manualLogin(){
    $user = User::find(1);
    Auth::login($user);
    return redirect('/');
}
///////////////////////////////////////////////////////////////
// or 

Auth::logout();

login selected user laravel

// Manual Auth Login
$user = User::find(1);
Auth::login($user);

//OR
$user = User::where('otp',$request->otp)->first();
auth()->login($user);