Alter Version

vendor/PhpSpreadsheet/Reader/Xlsx/BaseParserClass.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Reader\Xlsx;
+
+class BaseParserClass
+{
+    protected static function boolean($value)
+    {
+        if (is_object($value)) {
+            $value = (string) $value;
+        }
+
+        if (is_numeric($value)) {
+            return (bool) $value;
+        }
+
+        return $value === strtolower('true');
+    }
+}