From e525c695dd139c5618139efeee84cbf8f6966a65 Mon Sep 17 00:00:00 2001
From: Filippo Tessarotto <zoeslam@gmail.com>
Date: Sun, 25 Nov 2012 09:01:45 +0100
Subject: [PATCH] Fix key dereferencing

---
 Classes/PHPExcel/Worksheet/AutoFilter.php | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/Classes/PHPExcel/Worksheet/AutoFilter.php b/Classes/PHPExcel/Worksheet/AutoFilter.php
index 2448d35d..c39bfbf8 100644
--- a/Classes/PHPExcel/Worksheet/AutoFilter.php
+++ b/Classes/PHPExcel/Worksheet/AutoFilter.php
@@ -826,20 +826,20 @@ class PHPExcel_Worksheet_AutoFilter
 			if (is_object($value)) {
 				if ($key == '_workSheet') {
 					//	Detach from worksheet
-					$this->$key = NULL;
+					$this->{$key} = NULL;
 				} else {
-					$this->$key = clone $value;
+					$this->{$key} = clone $value;
 				}
 			} elseif ((is_array($value)) && ($key == '_columns')) {
 				//	The columns array of PHPExcel_Worksheet_AutoFilter objects
-				$this->$key = array();
+				$this->{$key} = array();
 				foreach ($value as $k => $v) {
-					$this->$key[$k] = clone $v;
+					$this->{$key}[$k] = clone $v;
 					// attach the new cloned Column to this new cloned Autofilter object
-					$this->$key[$k]->setParent($this);
+					$this->{$key}[$k]->setParent($this);
 				}
 			} else {
-				$this->$key = $value;
+				$this->{$key} = $value;
 			}
 		}
 	}