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

brainfoolong · PowerKiKi · commit 1a4e4ed7c5ad · 2022-02-17T14:43:18.000+01:00
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);
         }

Original file line number	Diff line number	Diff line change
`@@ -22,7 +22,7 @@ public function __construct(Worksheet $workSheet, SimpleXMLElement $worksheetXml`
`22`	`22`	`public function load(): void`
`23`	`23`	`{`
`24`	`24`	`// Remove all "$" in the auto filter range`
`25`		`- $autoFilterRange = preg_replace('/\$/', '', $this->worksheetXml->autoFilter['ref']);`
	`25`	`+ $autoFilterRange = preg_replace('/\$/', '', $this->worksheetXml->autoFilter['ref'] ?? '');`
`26`	`26`	`if (strpos($autoFilterRange, ':') !== false) {`
`27`	`27`	`$this->readAutoFilter($autoFilterRange, $this->worksheetXml);`
`28`	`28`	`}`