From 1f0732ae256f1994ec967dfc894ec3aa4edc8a5d Mon Sep 17 00:00:00 2001
From: Gregor Harlan <mail@gh01.de>
Date: Mon, 1 Aug 2022 09:58:07 +0200
Subject: [PATCH] Version-Plugin: Session-Variable korrigiert (#5276)

---
 .../addons/structure/plugins/version/lib/revision.php    | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/redaxo/src/addons/structure/plugins/version/lib/revision.php b/redaxo/src/addons/structure/plugins/version/lib/revision.php
index b2e4a2fcb0..6560e41948 100644
--- a/redaxo/src/addons/structure/plugins/version/lib/revision.php
+++ b/redaxo/src/addons/structure/plugins/version/lib/revision.php
@@ -76,8 +76,9 @@ public static function clearContent($articleId, $clang, $fromRevisionId)
     public static function setSessionArticleRevision(int $articleId, int $revision): void
     {
         $login = rex::getProperty('login');
-        /** @var array<int, 0|1> $revisions */
-        $revisions = $login->getSessionVar('rex_version_article');
+        /** @var array<int, 0|1>|null $revisions */
+        $revisions = $login->getSessionVar('rex_version_article', []);
+        $revisions = is_array($revisions) ? $revisions : [];
 
         $revisions[$articleId] = $revision;
         $login->setSessionVar('rex_version_article', $revisions);
@@ -86,8 +87,8 @@ public static function setSessionArticleRevision(int $articleId, int $revision):
     public static function getSessionArticleRevision(int $articleId): int
     {
         /** @var array<int, 0|1> $revisions */
-        $revisions = rex::getProperty('login')->getSessionVar('rex_version_article');
+        $revisions = rex::getProperty('login')->getSessionVar('rex_version_article', []);
 
-        return $revisions[$articleId] ?? 1;
+        return (int) ($revisions[$articleId] ?? 1);
     }
 }