fix php 8.1 error when autoFilter['ref'] is null

PHPOffice · Feb 17, 2022 · 1a4e4ed · 1a4e4ed
1 parent ef839f5
commit 1a4e4ed
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/PhpSpreadsheet/Reader/Xlsx/AutoFilter.php b/src/PhpSpreadsheet/Reader/Xlsx/AutoFilter.php
@@ -22,7 +22,7 @@ public function __construct(Worksheet $workSheet, SimpleXMLElement $worksheetXml
     public function load(): void
     {
         // Remove all "$" in the auto filter range
-        $autoFilterRange = preg_replace('/\$/', '', $this->worksheetXml->autoFilter['ref']);
+        $autoFilterRange = preg_replace('/\$/', '', $this->worksheetXml->autoFilter['ref'] ?? '');
         if (strpos($autoFilterRange, ':') !== false) {
             $this->readAutoFilter($autoFilterRange, $this->worksheetXml);
         }