From d73c036e5a1e99e11148627a550d920adbc22a6b Mon Sep 17 00:00:00 2001
From: Daniel Seifert <git@daniel-seifert.com>
Date: Thu, 19 Jul 2018 20:31:47 +0200
Subject: [PATCH] check for set variables

---
 daux/d3processor.php | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/daux/d3processor.php b/daux/d3processor.php
index 51b823f..445ac28 100644
--- a/daux/d3processor.php
+++ b/daux/d3processor.php
@@ -125,11 +125,14 @@ class d3DocumentRenderer implements BlockRendererInterface
         $daux = new Daux(Daux::STATIC_MODE, $output);
         $daux->initializeConfiguration();
 
-        $variables = $daux->getParams()['variables'];
-        if (isset($variables) && is_array($variables) && count($variables)) {
-            foreach ($variables as $varname => $varvalue) {
-                $pattern = '/{\$'.$varname.'}/mU';
-                $wholeDoc = preg_replace($pattern, $varvalue, $wholeDoc);
+        $params = $daux->getParams();
+        if (isset($params['variables'])) {
+            $variables = $params['variables'];
+            if (isset($variables) && is_array($variables) && count($variables)) {
+                foreach ($variables as $varname => $varvalue) {
+                    $pattern = '/{\$'.$varname.'}/mU';
+                    $wholeDoc = preg_replace($pattern, $varvalue, $wholeDoc);
+                }
             }
         }