Try deleting the comma before the last parenthesis in the following lines:

$newuser = array( 'name' => Input::get('name'), 'number'=>Input::get('number'), 'location'=>Input::get('location'), 'phone'=>Input::get('phone'), );

The problem still exists

Is your $newuser variable accesible globally?

yes is globally

The problem enters the function post without adding data to the database

this problem

public function save() { $newStudent = array( 'name' => Input::get('name'), 'number'=>Input::get('number'), 'location'=>Input::get('location'), 'phone'=>Input::get('phone'), );

$rules = array(
  # validation code
           'name' => 'Required|Min:3|Max:80|Alpha',
           'number'=> 'Required|Between:3,64',
           'location'=> 'Required|Min:3|Max:80|Alpha',
           'phone'=>'Required|Between:3,64',
);

$newStudent = new User($newStudent); $newStudent->save(); }