From 8d1660fe6d7fe0701ed0b17e22614d6eb8779ecb Mon Sep 17 00:00:00 2001
From: Khaled Huthaily <khaledenglish@yahoo.com>
Date: Sun, 23 Nov 2025 17:36:53 -0700
Subject: [PATCH] Fix PHP 8.5 deprecation - avoid using null as array key

This PR is backwards compatible and keeps the public API and behavior the same, but avoids the deprecation warning in PHP 8.5+.
---
 src/LogFile.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/LogFile.php b/src/LogFile.php
index 51e1ae6a..e1ad1642 100644
--- a/src/LogFile.php
+++ b/src/LogFile.php
@@ -75,11 +75,13 @@ public function type(): LogType
 
     public function index(?string $query = null): LogIndex
     {
-        if (! isset($this->_logIndexCache[$query])) {
-            $this->_logIndexCache[$query] = new LogIndex($this, $query);
+        $cacheKey = $query ?? '';
+
+        if (! isset($this->_logIndexCache[$cacheKey])) {
+            $this->_logIndexCache[$cacheKey] = new LogIndex($this, $query);
         }
 
-        return $this->_logIndexCache[$query];
+        return $this->_logIndexCache[$cacheKey];
     }
 
     public function logs(): LogReaderInterface