diff --git a/Classes/PHPExcel/Reader/OOCalc.php b/Classes/PHPExcel/Reader/OOCalc.php
index 8343e377..10642173 100644
--- a/Classes/PHPExcel/Reader/OOCalc.php
+++ b/Classes/PHPExcel/Reader/OOCalc.php
@@ -74,14 +74,16 @@ class PHPExcel_Reader_OOCalc extends PHPExcel_Reader_Abstract implements PHPExce
 			throw new PHPExcel_Reader_Exception("Could not open " . $pFilename . " for reading! File does not exist.");
 		}
 
+        $zipClass = PHPExcel_Settings::getZipClass();
+
 		// Check if zip class exists
-		if (!class_exists('ZipArchive',FALSE)) {
-			throw new PHPExcel_Reader_Exception("ZipArchive library is not enabled");
-		}
+//		if (!class_exists($zipClass, FALSE)) {
+//			throw new PHPExcel_Reader_Exception($zipClass . " library is not enabled");
+//		}
 
         $mimeType = 'UNKNOWN';
 		// Load file
-		$zip = new ZipArchive;
+		$zip = new $zipClass;
 		if ($zip->open($pFilename) === true) {
 			// check if it is an OOXML archive
 			$stat = $zip->statName('mimetype');
@@ -124,7 +126,9 @@ class PHPExcel_Reader_OOCalc extends PHPExcel_Reader_Abstract implements PHPExce
 			throw new PHPExcel_Reader_Exception("Could not open " . $pFilename . " for reading! File does not exist.");
 		}
 
-		$zip = new ZipArchive;
+        $zipClass = PHPExcel_Settings::getZipClass();
+
+		$zip = new $zipClass;
 		if (!$zip->open($pFilename)) {
 			throw new PHPExcel_Reader_Exception("Could not open " . $pFilename . " for reading! Error opening file.");
 		}
@@ -176,7 +180,9 @@ class PHPExcel_Reader_OOCalc extends PHPExcel_Reader_Abstract implements PHPExce
 
 		$worksheetInfo = array();
 
-		$zip = new ZipArchive;
+        $zipClass = PHPExcel_Settings::getZipClass();
+
+		$zip = new $zipClass;
 		if (!$zip->open($pFilename)) {
 			throw new PHPExcel_Reader_Exception("Could not open " . $pFilename . " for reading! Error opening file.");
 		}
@@ -331,7 +337,9 @@ class PHPExcel_Reader_OOCalc extends PHPExcel_Reader_Abstract implements PHPExce
 		$timezoneObj = new DateTimeZone('Europe/London');
 		$GMT = new DateTimeZone('UTC');
 
-		$zip = new ZipArchive;
+        $zipClass = PHPExcel_Settings::getZipClass();
+
+		$zip = new $zipClass;
 		if (!$zip->open($pFilename)) {
 			throw new PHPExcel_Reader_Exception("Could not open " . $pFilename . " for reading! Error opening file.");
 		}
diff --git a/Examples/01simplePCLZip.php b/Examples/01simplePCLZip.php
new file mode 100644
index 00000000..ab82497c
--- /dev/null
+++ b/Examples/01simplePCLZip.php
@@ -0,0 +1,106 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (C) 2006 - 2013 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+/** Error reporting */
+error_reporting(E_ALL);
+ini_set('display_errors', TRUE);
+ini_set('display_startup_errors', TRUE);
+date_default_timezone_set('Europe/London');
+
+define('EOL',(PHP_SAPI == 'cli') ? PHP_EOL : '<br />');
+
+/** Include PHPExcel */
+require_once dirname(__FILE__) . '/../Classes/PHPExcel.php';
+
+
+// Create new PHPExcel object
+echo date('H:i:s') , " Create new PHPExcel object" , EOL;
+$objPHPExcel = new PHPExcel();
+
+// Set document properties
+echo date('H:i:s') , " Set document properties" , EOL;
+$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
+							 ->setLastModifiedBy("Maarten Balliauw")
+							 ->setTitle("PHPExcel Test Document")
+							 ->setSubject("PHPExcel Test Document")
+							 ->setDescription("Test document for PHPExcel, generated using PHP classes.")
+							 ->setKeywords("office PHPExcel php")
+							 ->setCategory("Test result file");
+
+
+// Add some data
+echo date('H:i:s') , " Add some data" , EOL;
+$objPHPExcel->setActiveSheetIndex(0)
+            ->setCellValue('A1', 'Hello')
+            ->setCellValue('B2', 'world!')
+            ->setCellValue('C1', 'Hello')
+            ->setCellValue('D2', 'world!');
+
+// Miscellaneous glyphs, UTF-8
+$objPHPExcel->setActiveSheetIndex(0)
+            ->setCellValue('A4', 'Miscellaneous glyphs')
+            ->setCellValue('A5', 'éàèùâêîôûëïüÿäöüç');
+
+
+$objPHPExcel->getActiveSheet()->setCellValue('A8',"Hello\nWorld");
+$objPHPExcel->getActiveSheet()->getRowDimension(8)->setRowHeight(-1);
+$objPHPExcel->getActiveSheet()->getStyle('A8')->getAlignment()->setWrapText(true);
+
+
+// Rename worksheet
+echo date('H:i:s') , " Rename worksheet" , EOL;
+$objPHPExcel->getActiveSheet()->setTitle('Simple');
+
+
+// Set active sheet index to the first sheet, so Excel opens this as the first sheet
+$objPHPExcel->setActiveSheetIndex(0);
+
+
+// Save Excel 2007 file
+echo date('H:i:s') , " Write to Excel2007 format" , EOL;
+$callStartTime = microtime(true);
+
+// Use PCLZip rather than ZipArchive to create the Excel2007 OfficeOpenXML file
+PHPExcel_Settings::setZipClass(PHPExcel_Settings::PCLZIP);
+
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
+$callEndTime = microtime(true);
+$callTime = $callEndTime - $callStartTime;
+
+echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', pathinfo(__FILE__, PATHINFO_BASENAME)) , EOL;
+echo 'Call time to write Workbook was ' , sprintf('%.4f',$callTime) , " seconds" , EOL;
+// Echo memory usage
+echo date('H:i:s') , ' Current memory usage: ' , (memory_get_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+
+// Echo memory peak usage
+echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+// Echo done
+echo date('H:i:s') , " Done writing files" , EOL;
+echo 'Files have been created in ' , getcwd() , EOL;
diff --git a/Examples/07readerPCLZip.php b/Examples/07readerPCLZip.php
new file mode 100644
index 00000000..dc1885a5
--- /dev/null
+++ b/Examples/07readerPCLZip.php
@@ -0,0 +1,79 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (C) 2006 - 2013 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+error_reporting(E_ALL);
+ini_set('display_errors', TRUE);
+ini_set('display_startup_errors', TRUE);
+
+define('EOL',(PHP_SAPI == 'cli') ? PHP_EOL : '<br />');
+
+date_default_timezone_set('Europe/London');
+
+/** Include PHPExcel_IOFactory */
+require_once dirname(__FILE__) . '/../Classes/PHPExcel/IOFactory.php';
+
+
+if (!file_exists("05featuredemo.xlsx")) {
+	exit("Please run 05featuredemo.php first." . EOL);
+}
+
+// Use PCLZip rather than ZipArchive to read the Excel2007 OfficeOpenXML file
+PHPExcel_Settings::setZipClass(PHPExcel_Settings::PCLZIP);
+
+echo date('H:i:s') , " Load from Excel2007 file" , EOL;
+$callStartTime = microtime(true);
+
+$objPHPExcel = PHPExcel_IOFactory::load("05featuredemo.xlsx");
+
+$callEndTime = microtime(true);
+$callTime = $callEndTime - $callStartTime;
+echo 'Call time to read Workbook was ' , sprintf('%.4f',$callTime) , " seconds" , EOL;
+// Echo memory usage
+echo date('H:i:s') , ' Current memory usage: ' , (memory_get_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+
+echo date('H:i:s') , " Write to Excel2007 format" , EOL;
+$callStartTime = microtime(true);
+
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
+
+$callEndTime = microtime(true);
+$callTime = $callEndTime - $callStartTime;
+
+echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', pathinfo(__FILE__, PATHINFO_BASENAME)) , EOL;
+echo 'Call time to write Workbook was ' , sprintf('%.4f',$callTime) , " seconds" , EOL;
+// Echo memory usage
+echo date('H:i:s') , ' Current memory usage: ' , (memory_get_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+
+// Echo memory peak usage
+echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+// Echo done
+echo date('H:i:s') , " Done writing file" , EOL;
+echo 'File has been created in ' , getcwd() , EOL;
diff --git a/Examples/OOCalcReaderPCLZip.php b/Examples/OOCalcReaderPCLZip.php
new file mode 100644
index 00000000..2f3f922f
--- /dev/null
+++ b/Examples/OOCalcReaderPCLZip.php
@@ -0,0 +1,64 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (C) 2006 - 2013 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+/** Error reporting */
+error_reporting(E_ALL);
+
+date_default_timezone_set('Europe/London');
+
+/** PHPExcel_IOFactory */
+require_once dirname(__FILE__) . '/../Classes/PHPExcel/IOFactory.php';
+
+// Use PCLZip rather than ZipArchive to read the Excel2007 OfficeOpenXML file
+PHPExcel_Settings::setZipClass(PHPExcel_Settings::PCLZIP);
+
+echo date('H:i:s') , " Load from OOCalc file" , PHP_EOL;
+$callStartTime = microtime(true);
+
+$objReader = PHPExcel_IOFactory::createReader('OOCalc');
+$objPHPExcel = $objReader->load("OOCalcTest.ods");
+
+
+$callEndTime = microtime(true);
+$callTime = $callEndTime - $callStartTime;
+echo 'Call time to read Workbook was ' , sprintf('%.4f',$callTime) , " seconds" , PHP_EOL;
+// Echo memory usage
+echo date('H:i:s') , ' Current memory usage: ' , (memory_get_usage(true) / 1024 / 1024) , " MB" , PHP_EOL;
+
+
+echo date('H:i:s') , " Write to Excel2007 format" , PHP_EOL;
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
+echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', __FILE__) , PHP_EOL;
+
+
+// Echo memory peak usage
+echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , PHP_EOL;
+
+// Echo done
+echo date('H:i:s') , " Done writing file" , PHP_EOL;
+
diff --git a/Examples/runall.php b/Examples/runall.php
index 5512b024..4d2e207f 100644
--- a/Examples/runall.php
+++ b/Examples/runall.php
@@ -45,6 +45,7 @@ $aTests = array(
 	, '06largescale-with-cellcaching.php'
 	, '06largescale-xls.php'
 	, '07reader.php'
+	, '07readerPCLZip.php'
 	, '08conditionalformatting.php'
 	, '08conditionalformatting2.php'
 	, '09pagebreaks.php'
@@ -95,6 +96,7 @@ $aTests = array(
 	, '38cloneWorksheet.php'
 	, '40duplicateStyle.php'
 	, 'OOCalcReader.php'
+	, 'OOCalcReaderPCLZip.php'
 	, 'SylkReader.php'
 	, 'Excel2003XMLReader.php'
 	, 'XMLReader.php'