class User {

        private $db;
        private $conexion;

        function __construct() {
            $this -> db = new Conexion();
            $this -> conexion= $this->db->obtenerConexion();
        }

        public function autenticar($email,$password){
            $jsonData= array();
            $query = "SELECT * FROM `usuarios` WHERE email='$email' and contraseña='$password'";
            $result = mysqli_query($this->conexion, $query);

            if(mysqli_num_rows($result)>0){
                while ($row=mysqli_fetch_array($result,MYSQLI_ASSOC)) {
                    $jsonData['Estado'] [] = 'correcto';
                    $jsonData['nombre'] []=$row['nombre'];
                    $jsonData['codigo'][]= $row['codigo'];
                    $jsonData['foto'][]=$row['FotoPerfil'];
                }
          }
          else{
                $jsonData['Estado'] = 'Error, credenciales invalidas';
            }

            $json['Login_data']=$jsonData;
            echo json_encode($json);
            mysqli_close($this -> conexion);
        }
    }

    $user = new User();
    if(isset($_POST['email'],$_POST['password'])) {
        $email = $_POST['email'];
        $password = $_POST['password'];
        if(!empty($email) && !empty($password)){
            $user-> autenticar($email,$password);
        }else{
            $json['Estado'] = 'Error, campos vacios';
            echo json_encode($json);
        }

    }else{
            $json['Estado'] = 'Error, variables sin contenido de Post';
            echo json_encode($json);
    }
?>