<?php

function hash_password($password) {
	return hash('sha256', $password);
}

function check_password($hash, $password) {
	return $hash === hash_password($password);
}

function authenticate($email, $password) {
	$user = R::findOne('user', ' email=? ', array($email));
	if ($user === null) return false;
	return check_password($user->encrypted_password, $passwod);
}

function save_user($name, $email, $password) {
	$user = R::dispense('user');
	$user->name = $name;
	$user->email = $email;
	$user->encrypted_password = hash_password($password);
	$id = $::store($user);
	if ($id === null) return null;
	return $user;
}