<?php
declare(strict_types=1);

if (session_status() === PHP_SESSION_NONE) {
    session_start();
}

function flash_set(string $type, string $message): void {
    $_SESSION['flash'] = ['type' => $type, 'message' => $message];
}

function flash_get(): ?array {
    if (!empty($_SESSION['flash'])) {
        $flash = $_SESSION['flash'];
        unset($_SESSION['flash']);
        return $flash;
    }
    return null;
}