Recursive function getTitlesLineage()

router.php

@@ -41,23 +41,19 @@ if (PAGE !== 'index') {
 	}
 }
 
-for (
-	$path_i = PAGE_LINEAGE , $results = [] , $firstIteration = true ;
-	$title = TITLES , $path_i !== [] ;
-	array_pop($path_i) , $results[] = $title
-) {
-	foreach ($path_i as $el) {
-		if (end($path_i) !== $el)
-			$title = $title[$el];
-		else {
-			if ($firstIteration AND end($path_i) !== 'index')
-				$results[] = $title[$el];
-			$firstIteration = false;
-			$title = $title['index'];
-		}
-	}
+function getTitlesLineage($titles, $pageElements) {
+	if (!isset($titles['index']) OR $pageElements[0] === 'index')
+		return [$titles[$pageElements[0]]];
+	$result = $titles['index'];
+	if (!isset($pageElements[1]))
+		unset($titles['index']);
+	else
+		$titles = $titles[array_shift($pageElements)];
+	$results = getTitlesLineage($titles, $pageElements);
+	$results[] = $result;
+	return $results;
 }
-define('TITLES_LINEAGE', array_reverse($results));
+define('TITLES_LINEAGE', array_reverse(getTitlesLineage(TITLES, PAGE_LINEAGE)));
 
 require "html.php";