From 50654a3e6971642408ef012c4fa78fafb2961dda Mon Sep 17 00:00:00 2001
From: oleibman <10341515+oleibman@users.noreply.github.com>
Date: Mon, 10 Aug 2026 07:14:22 -0700
Subject: [PATCH] Add Xls to Sample 25

---
 samples/Basic2/25_In_memory_image.php       | 2 +-
 src/PhpSpreadsheet/Writer/Xls/Worksheet.php | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/samples/Basic2/25_In_memory_image.php b/samples/Basic2/25_In_memory_image.php
index a18880eae..b798c8472 100644
--- a/samples/Basic2/25_In_memory_image.php
+++ b/samples/Basic2/25_In_memory_image.php
@@ -101,7 +101,7 @@ $drawing->setCoordinates('C5');
 $helper->write(
     $spreadsheet,
     __FILE__,
-    ['Xlsx', 'Html', 'Ods'],
+    ['Xlsx', 'Html', 'Ods', 'Xls'],
     false,
     function (BaseWriter $writer): void {
         if (method_exists($writer, 'writeAllSheets')) {
diff --git a/src/PhpSpreadsheet/Writer/Xls/Worksheet.php b/src/PhpSpreadsheet/Writer/Xls/Worksheet.php
index bd40f8ada..941ae9f7a 100644
--- a/src/PhpSpreadsheet/Writer/Xls/Worksheet.php
+++ b/src/PhpSpreadsheet/Writer/Xls/Worksheet.php
@@ -484,6 +484,9 @@ class Worksheet extends BIFFwriter
             [$column, $row] = Coordinate::indexesFromString($coordinate);
 
             $url = $hyperlink->getUrl();
+            if ($url === '') {
+                continue;
+            }
             if ($url[0] === '#') {
                 $url = "internal:$url";
             } elseif (str_starts_with($url, 'sheet://')) {