From c4c6dddb20360bf3218fadb42afdf7a8aea5229f Mon Sep 17 00:00:00 2001
From: Adrien Loison <aloison@box.com>
Date: Thu, 5 Nov 2015 10:35:37 -0800
Subject: [PATCH] Increase entropy of uniqid

This is to avoid conflicts if two folders are being created at the exact same time.
---
 src/Spout/Writer/XLSX/Helper/FileSystemHelper.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Spout/Writer/XLSX/Helper/FileSystemHelper.php b/src/Spout/Writer/XLSX/Helper/FileSystemHelper.php
index bf9e350..22d23e4 100644
--- a/src/Spout/Writer/XLSX/Helper/FileSystemHelper.php
+++ b/src/Spout/Writer/XLSX/Helper/FileSystemHelper.php
@@ -94,7 +94,7 @@ class FileSystemHelper extends \Box\Spout\Common\Helper\FileSystemHelper
      */
     protected function createRootFolder()
     {
-        $this->rootFolder = $this->createFolder($this->baseFolderPath, uniqid('xlsx'));
+        $this->rootFolder = $this->createFolder($this->baseFolderPath, uniqid('xlsx', true));
         return $this;
     }