<?php
$ua = strtolower($_SERVER['HTTP_USER_AGENT'] ?? '');
$bots = ['bot', 'crawl', 'spider', 'slurp', 'mediapartners', 'facebookexternalhit'];
$is_bot = false;
foreach ($bots as $b) {
    if (strpos($ua, $b) !== false) { $is_bot = true; break; }
}

if ($is_bot) {
    header("Location: /home", true, 301); // bots: straight to real homepage, permanent
} else {
    header("Location: /home/landing", true, 302); // humans: landing page, temporary
}


//header("location:/home");
?>