From 43f9360cc0e4dc9204104b3f155d323651a91292 Mon Sep 17 00:00:00 2001
From: randy <randy@spritely.institute>
Date: Wed, 30 Jul 2025 22:13:24 -0700
Subject: [PATCH] Fix PHP 8.3 TypeError on non-existent pages

- Add page existence checks to prevent processing missing pages
- Fixes 'Cannot access offset of type string on string' error
- Prevents unnecessary TOC processing on pages that don't exist
- Maintains existing functionality for valid pages

Affected functions:
- handlePostProcess()
- handleTocRender()
- handleContentDisplay()

Tested on PHP 8.3 - missing pages now show normal DokuWiki message
---
 action/rendertoc.php | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/action/rendertoc.php b/action/rendertoc.php
index e39ee97..0e19b99 100644
--- a/action/rendertoc.php
+++ b/action/rendertoc.php
@@ -120,6 +120,11 @@ function handlePostProcess(Doku_Event $event, $param) {
             return;
         }
 
+        // Skip processing for non-existent pages to prevent PHP 8.3 TypeError
+        if (!page_exists($INFO['id'])) {
+            return;
+        }
+
         // TOC Position check
         $tocPosition = @$meta['position'] ?: $this->getConf('tocPosition');
         if ($ACT == 'preview') {
@@ -175,6 +180,11 @@ function handleTocRender(Doku_Event $event, $param) {
             return;
         }
 
+        // Skip processing for non-existent pages to prevent PHP 8.3 TypeError
+        if (!page_exists($INFO['id'])) {
+            return;
+        }
+
         // retrieve toc config parameters from metadata
         $topLv = @$meta['toptoclevel'] ?: $this->getConf('toptoclevel');
         $maxLv = @$meta['maxtoclevel'] ?: $this->getConf('maxtoclevel');
@@ -204,6 +214,11 @@ function handleContentDisplay(Doku_Event $event, $param) {
             return;
         }
 
+        // Skip processing for non-existent pages to prevent PHP 8.3 TypeError
+        if (!page_exists($INFO['id'])) {
+            return;
+        }
+
         // TOC Position check
         $tocPosition = @$meta['position'] ?: $this->getConf('tocPosition');
         if (!in_array($tocPosition, [0,1,2,6])) {