index.php

<?php
preg_match('(^/(?:(?P<lang>en|de)/)?(?P<page>.*?)(\.html)?$)', $_SERVER['REQUEST_URI'] ?? '', $match);
$lang = empty($match['lang']) ? 'cs' : $match['lang'];
$page = $match['page'] ?? '';

ob_start();
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<link type="image/png" href="/images/logo_krk16.png" rel="shortcut icon">
<link rel="stylesheet" type="text/css" href="/highslide4/highslide.css">
<link rel="stylesheet" href="/style.css" type="text/css">
<meta http-equiv="Content-Style-Type" content="text/css">
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<script type="text/javascript" src="/simple.js"></script>
<script type="text/javascript" src="/highslide4/highslide-with-gallery.js"></script>
<script type="text/javascript">
	hs.graphicsDir = '/highslide4/graphics/';
	hs.align = 'center';
	hs.transitions = ['expand', 'crossfade'];
	hs.outlineType = 'rounded-white';
	hs.wrapperClassName = 'controls-in-heading';
	hs.fadeInOut = true;
	//hs.dimmingOpacity = 0.75;

	// Add the controlbar
	if (hs.addSlideshow) hs.addSlideshow({
		//slideshowGroup: 'group1',
		interval: 5000,
		repeat: false,
		useControls: true,
		fixedControls: false,
		overlayOptions: {
			opacity: 1,
			position: 'top right',
			hideOnMouseOut: false
		}
	});

</script>
<script type="text/javascript">
<?php
if ($lang == 'en') {
?>
hs.lang = {
   cssDirection:     'ltr',
   loadingText :     'Loading...',
   loadingTitle :    'Click to cancel',
   focusTitle :      'Click to bring to front',
   fullExpandTitle : 'Expand to actual size (f)',
   fullExpandText :  'Full size',
   creditsText :     'Powered by <i>Highslide JS</i>',
   creditsTitle :    'Go to the Highslide JS homepage',
   previousText :    'Previous',
   previousTitle :   'Previous (arrow left)',
   nextText :        'Next',
   nextTitle :       'Next (arrow right)',
   moveTitle :       'Move',
   moveText :        'Move',
   closeText :       'Close',
   closeTitle :      'Close (esc)',
   resizeTitle :     'Resize',
   playText :        'Play',
   playTitle :       'Play slideshow (spacebar)',
   pauseText :       'Pause',
   pauseTitle :      'Pause slideshow (spacebar)',
   number :          'Image %1 of %2',
   restoreTitle :    'Click to close image, click and drag to move. Use arrow keys for next and previous.'
};
<?php
} elseif ($lang == 'de') {
?>
hs.lang = {
   loadingText :     'Lade...',
   loadingTitle :    'Klick zum Abbrechen',
   focusTitle :      'Klick um nach vorn zu bringen',
   fullExpandTitle : 'Zur Originalgröße erweitern',
   fullExpandText :  'Vollbild',
   creditsText :     'Powered by <i>Highslide JS</i>',
   creditsTitle :    'Gehe zur Highslide JS Homepage',
   previousText :    'Voriges',
   previousTitle :   'Voriges (Pfeiltaste links)',
   nextText :        'Nächstes',
   nextTitle :       'Nächstes (Pfeiltaste rechts)',
   moveTitle :       'Verschieben',
   moveText :        'Verschieben',
   closeText :       'Schließen',
   closeTitle :      'Schließen (Esc)',
   resizeTitle :     'Größe wiederherstellen',
   playText :        'Abspielen',
   playTitle :       'Slideshow abspielen (Leertaste)',
   pauseText :       'Pause',
   pauseTitle :      'Pausiere Slideshow (Leertaste)',
   restoreTitle :    'Klick um das Bild zu schließen, klick und ziehe um zu verschieben. Benutze Pfeiltasten für vor und zurück.'
};
<?php
} else {
?>
hs.lang = {
   loadingText :     'Načítá se...',
   loadingTitle :    'Klikněte pro zrušení',
   focusTitle :      'Klikněte pro přenesení do popředí',
   fullExpandTitle : 'Zvětšit na původní velikost',
   fullExpandText :  'Plná velikost',
   creditsText :     'Powered by <i>Highslide JS</i>',
   creditsTitle :    'Přejít na stránky Highslide JS',
   previousText :    'Předchozí',
   previousTitle :   'Předchozí (šipka vlevo)',
   nextText :        'Další',
   nextTitle :       'Další (šipka vpravo)',
   moveTitle :       'Přesunout',
   moveText :        'Přesunout',
   closeText :       'Zavřít',
   closeTitle :      'Zavřít (esc)',
   resizeTitle :     'Změnit velikost',
   playText :        'Přehrát',
   playTitle :       'Přehrát slideshow (mezerník)',
   pauseText :       'Pozastavit',
   pauseTitle :      'Pozastavit slideshow (mezerník)',
   restoreTitle :    'Klikněte pro zavření obrázku, klikněte a táhněte pro jeho přesunutí. Použijte šipky na klávesnici pro přesun na další a předchozí.'
};
<?php
}
?>
</script>
<title><?php include './pages/title_krk.php'; ?></title>
</head>
<body>
<div class="content">
<div class="header"><span class="title"><?php include './pages/title_krk.php'; ?></span><br><span class="slogan"><?php include './pages/slogan.php'; ?></span>
<?php
$pageFileName = preg_replace('(([^/]+)/$)', '\1/\1', $page);
echo '<span class="floatright">';
if (file_exists(__DIR__ . "/pages/$page-de.php") || file_exists(__DIR__ . "/pages/$pageFileName-de.php")) {
	if (file_exists(__DIR__ . "/pages/$pageFileName-de.php")) {
		$lngc = 'de';
		$icona = "<a href=\"/$lngc/$page\"><img src=\"/images/" . $lngc . 'f.png" alt=""></a>';
	} else {
		$lngc = 'de';
		$icona = "<a href=\"/$lngc/" . htmlspecialchars($page) . '.html"><img src="/images/' . $lngc . 'f.png" alt=""></a>';
	}

	if ($lang == 'de') {
		echo '';
	} else {
		echo $icona;
	}
}
if (file_exists('pages/' . htmlspecialchars($page) . '-en.php') || file_exists('pages/' . $pageFileName . '-en.php')) {
	if (file_exists('pages/' . $pageFileName . '-en.php')) {
		$lngc = 'en';
		$icona = "<a href=\"/$lngc/" . htmlspecialchars($page) . '"><img src="/images/' . $lngc . 'f.png" alt=""></a>';
	} else {
		$lngc = 'en';
		$icona = "<a href=\"/$lngc/" . htmlspecialchars($page) . '.html"><img src="/images/' . $lngc . 'f.png" alt=""></a>';
	}
	if ($lang == 'en') {
		echo '';
	} else {
		echo $icona;
	}
} elseif ($page === '' && file_exists('pages/krk_default-en.php')) {
	$lngc = 'en';
	$icona = "<a href=\"/$lngc/\"><img src=\"/images/" . $lngc . 'f.png" alt=""></a>';
	if ($lang == 'en') {
		echo '';
	} else {
		echo $icona;
	}
}
if (file_exists('pages/' . htmlspecialchars($page) . '.php') || file_exists('pages/' . $pageFileName . '.php')) {
	if (file_exists('pages/' . $pageFileName . '.php')) {
		$lngc = '';
		$icona = '<a href="/' . htmlspecialchars($page) . '"><img src="/images/' . $lngc . 'f.png" alt=""></a>';
	} else {
		$lngc = '';
		$icona = '<a href="/' . htmlspecialchars($page) . '.html"><img src="/images/' . $lngc . 'f.png" alt=""></a>';
	}

	if ($lang == 'cs') {
		echo '';
	} else {
		echo $icona;
	}
}
if ($lang == 'en' && ($page === '' || $page === 'krk_default')) {
	$lngc = '';
	$icona = '<a href="/"><img src="/images/' . $lngc . 'f.png" alt=""></a>';
	echo $icona;
}
echo '</span>';
?>
</div>
<div class="top-menu">
<?php
if ($lang === 'cs') {
	include './pages/krk_topmenu.php';
} elseif ($lang === 'en' && file_exists('./pages/krk_topmenu-en.php')) {
	include './pages/krk_topmenu-en.php';
}
?>
</div>
<div class="sidebar"><div class="sidebar-content">
<ul>
<?php
if (str_contains($page, 'mcr_2009') && $lang === 'en') {
	include './pages/mcr_2009/menumcr_2009-en.php';
} elseif (str_contains($page, 'mcr_2009') && $lang === 'de') {
	include './pages/mcr_2009/menumcr_2009-de.php';
} elseif (str_contains($page, 'mcr_2009')) {
	include './pages/mcr_2009/menumcr_2009.php';
} else {
	if ($lang === 'cs') {
		include './pages/menukrk.php';
	} else {
		include './pages/menukrk-en.php';
	}
}
?>
</ul><br><br><br>
</div></div><div class="main"><div class="main-content">
<?php
$escaped_page = str_replace([')', '(', '\\', '"', "\'", ';', '{', '}', '$', '[', ']', '<', '>'], '', htmlspecialchars($page));
if ($page !== '') {
	if ($lang !== 'cs') {
		$jazycek = '-' . $lang;
	} else {
		$jazycek = '';
	}
	if ($page == 'mcr_2009/') {
		include "./pages/mcr_2009/mcr_2009$jazycek.php";
	} elseif ($page == 'mcr_2009/probihani_loucna/') {
		include "./pages/mcr_2009/probihani_loucna/probihani_loucna$jazycek.php";
	} elseif ($page == 'clanky/') {
		include "./pages/clanky/clanky$jazycek.php";
	} elseif ($lang === 'cs' && file_exists(__DIR__ . "/pages/$escaped_page.php")) {
		include "./pages/$escaped_page.php";
	} elseif (file_exists(__DIR__ . "/pages/$escaped_page-$lang.php")) {
		include "./pages/$escaped_page-$lang.php";
	} else {
		include __DIR__ . '/pages/404.php';
	}
} else {
	if ($lang === 'cs') {
		include './pages/krk_default.php';
	} else {
		include './pages/krk_default-en.php';
	}
}
?>
</div></div>
<div class="footer">
</div>
</div>
</body>
</html>