From c95d3f3a4d088dae2c62d713c5fb86bfc226dbed Mon Sep 17 00:00:00 2001
From: Uwe Tews <uwe.tews@gmail.com>
Date: Tue, 24 Apr 2018 11:33:47 +0200
Subject: [PATCH] - fix compatibility for PHP version < 5.6

---
 libs/Smarty.class.php | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index aba24441..0ce8fdea 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -1042,10 +1042,16 @@ class Smarty extends Smarty_Internal_TemplateBase
      */
     public function _realpath($path, $realpath = null)
     {
-        static $nds = array('/' => '\\', '\\' => '/');
-        static $sepDotsep = DIRECTORY_SEPARATOR . '.' . DIRECTORY_SEPARATOR;
-        static $sepDot = DIRECTORY_SEPARATOR . '.';
-        static $sepSep = DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR;
+        static $nds = null;
+        static $sepDotsep = null;
+        static $sepDot = null;
+        static $sepSep =null;
+        if (!isset($nds)) {
+            $nds = array('/' => '\\', '\\' => '/');
+            $sepDotsep = DIRECTORY_SEPARATOR . '.' . DIRECTORY_SEPARATOR;
+            $sepDot = DIRECTORY_SEPARATOR . '.';
+            $sepSep = DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR;
+        }
         // normalize DIRECTORY_SEPARATOR
         $path = str_replace(array($nds[DIRECTORY_SEPARATOR], $sepDotsep), DIRECTORY_SEPARATOR, $path);
         if (strpos($path,$sepDot) === false && (($realpath === false && $path[0] === '.') || $realpath === null) && $path[0] !== '\\') {