function validarLogin($correo_usr, $password_usr){
        $stmt = $this->conexion->prepare('SELECT * FROM USUARIO WHERE correo_usr = ? AND password_usr = ?');
        $password_usr = password_hash($password_usr, PASSWORD_DEFAULT);
        $stmt->bind_param("ss", $correo_usr, $password_usr);

        $stmt->execute();

        $stmt->store_result();

        return $stmt->num_rows > 0;
    }