<?php
function request (string $name): array {
  if (isset($_POST[$name])) {
    return ["post" => htmlspecialchars($name)];
  }
  else if (isset($_GET[$name])) {
    return ["get" => htmlspecialchars($name)];
  }
  else if (isset($_REQUEST[$name])) {
    return ["request" => htmlspecialchars($name)];
  }

  return ["error" => ""];
}

function request_all (): array {
  $res = [];
  if (!empty($_POST)) {
    $res["post"] = [];
    foreach ($_POST as $k => $v) $res["post"][$k] = htmlspecialchars($v);
  }
  if (!empty($_GET)) {
    $res["get"] = [];
    foreach ($_GET as $k => $v) $res["get"][$k] = htmlspecialchars($v);
  }
  if (!empty($_REQUEST)) {
    $res["request"] = [];
    foreach ($_REQUEST as $k => $v) $res["request"][$k] = htmlspecialchars($v);
  }

  return $res;
}
?>