From 7d4e2bd2aae791013b0ab00ca3186cebc4d29763 Mon Sep 17 00:00:00 2001
From: NioFBI <niofbi@yandex.ru>
Date: Thu, 21 Aug 2025 02:31:10 +0300
Subject: [PATCH] Add helper to generate object IDs without spl_object_id

---
 src/PhpSpreadsheet/Shared/ObjectIdHelper.php | 16 ++++++++++++++++
 src/PhpSpreadsheet/Style/Style.php           |  3 ++-
 src/PhpSpreadsheet/Worksheet/Worksheet.php   |  7 ++++---
 3 files changed, 22 insertions(+), 4 deletions(-)
 create mode 100644 src/PhpSpreadsheet/Shared/ObjectIdHelper.php

diff --git a/src/PhpSpreadsheet/Shared/ObjectIdHelper.php b/src/PhpSpreadsheet/Shared/ObjectIdHelper.php
new file mode 100644
index 0000000000..f50081548a
--- /dev/null
+++ b/src/PhpSpreadsheet/Shared/ObjectIdHelper.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Shared;
+
+class ObjectIdHelper
+{
+    public static function id(object $object): int
+    {
+        if (function_exists('spl_object_id')) {
+            return spl_object_id($object);
+        }
+
+        return abs(crc32(spl_object_hash($object)));
+    }
+}
+
diff --git a/src/PhpSpreadsheet/Style/Style.php b/src/PhpSpreadsheet/Style/Style.php
index 5666d302de..70fdc2d1bb 100644
--- a/src/PhpSpreadsheet/Style/Style.php
+++ b/src/PhpSpreadsheet/Style/Style.php
@@ -9,6 +9,7 @@
 use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
 use PhpOffice\PhpSpreadsheet\Spreadsheet;
 use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+use PhpOffice\PhpSpreadsheet\Shared\ObjectIdHelper;
 
 class Style extends Supervisor
 {
@@ -398,7 +399,7 @@ public function applyFromArray(array $styleArray, bool $advancedBorders = true):
                 } else {
                     // Style cache is stored by Style::getHashCode(). But calling this method is
                     // expensive. So we cache the php obj id -> hash.
-                    $objId = spl_object_id($style);
+                    $objId = ObjectIdHelper::id($style);
 
                     // Look for the original HashCode
                     $styleHash = self::$cachedStyles['hashByObjId'][$objId] ?? null;
diff --git a/src/PhpSpreadsheet/Worksheet/Worksheet.php b/src/PhpSpreadsheet/Worksheet/Worksheet.php
index f512ee406a..1cedfa74a8 100644
--- a/src/PhpSpreadsheet/Worksheet/Worksheet.php
+++ b/src/PhpSpreadsheet/Worksheet/Worksheet.php
@@ -25,6 +25,7 @@
 use PhpOffice\PhpSpreadsheet\RichText\RichText;
 use PhpOffice\PhpSpreadsheet\Shared;
 use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
+use PhpOffice\PhpSpreadsheet\Shared\ObjectIdHelper;
 use PhpOffice\PhpSpreadsheet\Spreadsheet;
 use PhpOffice\PhpSpreadsheet\Style\Alignment;
 use PhpOffice\PhpSpreadsheet\Style\Color;
@@ -355,7 +356,7 @@ public function __construct(?Spreadsheet $parent = null, string $title = 'Worksh
     {
         // Set parent and title
         $this->parent = $parent;
-        $this->hash = spl_object_id($this);
+        $this->hash = ObjectIdHelper::id($this);
         $this->setTitle($title, false);
         // setTitle can change $pTitle
         $this->setCodeName($this->getTitle());
@@ -414,7 +415,7 @@ public function __destruct()
 
     public function __wakeup(): void
     {
-        $this->hash = spl_object_id($this);
+        $this->hash = ObjectIdHelper::id($this);
     }
 
     /**
@@ -3759,7 +3760,7 @@ public function __clone()
                 }
             }
         }
-        $this->hash = spl_object_id($this);
+        $this->hash = ObjectIdHelper::id($this);
     }
 
     /**