<?php
function starts_with($haystack, $needle)
{
  return ($needle === ""
          || strrpos($haystack, $needle, -strlen($haystack)) !== false);
}

function ends_with($haystack, $needle)
{
  return ($needle === ""
          || strpos($haystack, $needle, strlen($haystack) - strlen($needle))
          !== false);
}

function error($code, $message)
{
  header("HTTP/ $code $message");
  die(json_encode(array("code" => intval($code), "message" => $message)));
}

function status_confirm($id)
{
}

function status_create()
{
}

function status_feed()
{
}

function user_create()
{
}

function user_login()
{
}

function main()
{
  $m_get = ($_SERVER['REQUEST_METHOD'] == "GET");
  $m_post = ($_SERVER['REQUEST_METHOD'] == "POST");
  $matches = array();

  $path = rtrim($_GET['_url'], "/");
  if ($path === "")
    $path = "/";
  echo hash_pbkdf2(
  if (preg_match($path, "^/status/([0-9]+)/confirm$", $matches) && $m_post)
    status_confirm($matches[1]);
  else if ($path === "/status" && $m_post)
    status_create();
  else if ($path === "/status/feed" && $m_get)
    status_feed();
  else if ($path === "/user" && $m_post)
    user_create();
  else if ($path === "/user/login" && $m_post)
    user_login();
  else
    error(501, "Not Implemented");
}

main();
?>