From 38bcd10ab77a3f2f6450cfb68aa335c2e2367ac6 Mon Sep 17 00:00:00 2001
From: Wallace Andrade <wallace@pc-wallace.Home>
Date: Tue, 2 Jan 2018 20:10:30 -0200
Subject: [PATCH] Bug fix

---
 Classes/PHPExcel/Cell.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Classes/PHPExcel/Cell.php b/Classes/PHPExcel/Cell.php
index c99a3c8b1..b3de421e7 100644
--- a/Classes/PHPExcel/Cell.php
+++ b/Classes/PHPExcel/Cell.php
@@ -836,6 +836,7 @@ public static function stringFromColumnIndex($pColumnIndex = 0)
         //    caching using a static within the method is faster than a class static,
         //        though it's additional memory overhead
         static $_indexCache = array();
+        $pColumnIndex = (int) $pColumnIndex;
 
         if (!isset($_indexCache[$pColumnIndex])) {
             // Determine column string