13 files changed, 0 insertions, 2659 deletions
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/APC.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/APC.php
deleted file mode 100644
index cda4d3b..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/APC.php
+++ /dev/null
@@ -1,280 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_APC
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Prefix used to uniquely identify cache data for this worksheet
-	 *
-	 * @access	private
-	 * @var string
-	 */
-	private $_cachePrefix = null;
-
-	/**
-	 * Cache timeout
-	 *
-	 * @access	private
-	 * @var integer
-	 */
-	private $_cacheTime = 600;
-
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @access	private
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			if (!apc_store($this->_cachePrefix.$this->_currentObjectID.'.cache',serialize($this->_currentObject),$this->_cacheTime)) {
-				$this->__destruct();
-				throw new Exception('Failed to store cell '.$this->_currentObjectID.' in APC');
-			}
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-	 * @access	public
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-		$this->_cellCache[$pCoord] = true;
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @access	public
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	void
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		//	Check if the requested entry is the current object, or exists in the cache
-		if (parent::isDataSet($pCoord)) {
-			if ($this->_currentObjectID == $pCoord) {
-				return true;
-			}
-			//	Check if the requested entry still exists in apc
-			$success = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
-			if ($success === false) {
-				//	Entry no longer exists in APC, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new Exception('Cell entry '.$pCoord.' no longer exists in APC');
-			}
-			return true;
-		}
-		return false;
-	}	//	function isDataSet()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-	 * @access	public
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (parent::isDataSet($pCoord)) {
-			$obj = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
-			if ($obj === false) {
-				//	Entry no longer exists in APC, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new Exception('Cell entry '.$pCoord.' no longer exists in APC');
-			}
-		} else {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize($obj);
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-	 * @access	public
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	Exception
-     */
-	public function deleteCacheData($pCoord) {
-		//	Delete the entry from APC
-		apc_delete($this->_cachePrefix.$pCoord.'.cache');
-
-		//	Delete the entry from our cell address array
-		parent::deleteCacheData($pCoord);
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @access	public
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Get a new id for the new file name
-		$baseUnique = $this->_getUniqueID();
-		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			if ($cellID != $this->_currentObjectID) {
-				$obj = apc_fetch($this->_cachePrefix.$cellID.'.cache');
-				if ($obj === false) {
-					//	Entry no longer exists in APC, so clear it from the cache array
-					parent::deleteCacheData($cellID);
-					throw new Exception('Cell entry '.$cellID.' no longer exists in APC');
-				}
-				if (!apc_store($newCachePrefix.$cellID.'.cache',$obj,$this->_cacheTime)) {
-					$this->__destruct();
-					throw new Exception('Failed to store cell '.$cellID.' in APC');
-				}
-			}
-		}
-		$this->_cachePrefix = $newCachePrefix;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if ($this->_currentObject !== NULL) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-
-		//	Flush the APC cache
-		$this->__destruct();
-
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$cacheTime	= (isset($arguments['cacheTime']))	? $arguments['cacheTime']	: 600;
-
-		if ($this->_cachePrefix === NULL) {
-			$baseUnique = $this->_getUniqueID();
-			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
-			$this->_cacheTime = $cacheTime;
-
-			parent::__construct($parent);
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			apc_delete($this->_cachePrefix.$cellID.'.cache');
-		}
-	}	//	function __destruct()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('apc_store')) {
-			return false;
-		}
-		if (apc_sma_info() === false) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/CacheBase.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/CacheBase.php
deleted file mode 100644
index deaae4c..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/CacheBase.php
+++ /dev/null
@@ -1,252 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_CacheBase
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-abstract class PHPExcel_CachedObjectStorage_CacheBase {
-
-	/**
-	 * Parent worksheet
-	 *
-	 * @var PHPExcel_Worksheet
-	 */
-	protected $_parent;
-
-	/**
-	 * The currently active Cell
-	 *
-	 * @var PHPExcel_Cell
-	 */
-	protected $_currentObject = null;
-
-	/**
-	 * Coordinate address of the currently active Cell
-	 *
-	 * @var string
-	 */
-	protected $_currentObjectID = null;
-
-
-	/**
-	 * Flag indicating whether the currently active Cell requires saving
-	 *
-	 * @var boolean
-	 */
-	protected $_currentCellIsDirty = true;
-
-	/**
-	 * An array of cells or cell pointers for the worksheet cells held in this cache,
-	 *		and indexed by their coordinate address within the worksheet
-	 *
-	 * @var array of mixed
-	 */
-	protected $_cellCache = array();
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 */
-	public function __construct(PHPExcel_Worksheet $parent) {
-		//	Set our parent worksheet.
-		//	This is maintained within the cache controller to facilitate re-attaching it to PHPExcel_Cell objects when
-		//		they are woken from a serialized state
-		$this->_parent = $parent;
-	}	//	function __construct()
-
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return true;
-		}
-		//	Check if the requested entry exists in the cache
-		return isset($this->_cellCache[$pCoord]);
-	}	//	function isDataSet()
-
-
-    /**
-     * Add or Update a cell in cache
-     *
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function updateCacheData(PHPExcel_Cell $cell) {
-		return $this->addCacheData($cell->getCoordinate(),$cell);
-	}	//	function updateCacheData()
-
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	Exception
-     */
-	public function deleteCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			$this->_currentObject->detach();
-			$this->_currentObjectID = $this->_currentObject = null;
-		}
-
-		if (is_object($this->_cellCache[$pCoord])) {
-			$this->_cellCache[$pCoord]->detach();
-			unset($this->_cellCache[$pCoord]);
-		}
-		$this->_currentCellIsDirty = false;
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	array of string
-	 */
-	public function getCellList() {
-		return array_keys($this->_cellCache);
-	}	//	function getCellList()
-
-
-	/**
-	 * Sort the list of all cell addresses currently held in cache by row and column
-	 *
-	 * @return	void
-	 */
-	public function getSortedCellList() {
-		$sortKeys = array();
-		foreach ($this->getCellList() as $coord) {
-			list($column,$row) = sscanf($coord,'%[A-Z]%d');
-			$sortKeys[sprintf('%09d%3s',$row,$column)] = $coord;
-		}
-		ksort($sortKeys);
-
-		return array_values($sortKeys);
-	}	//	function sortCellList()
-
-
-
-	/**
-	 * Get highest worksheet column and highest row that have cell records
-	 *
-	 * @return array Highest column name and highest row number
-	 */
-	public function getHighestRowAndColumn()
-	{
-		// Lookup highest column and highest row
-		$col = array('A' => '1A');
-		$row = array(1);
-		foreach ($this->getCellList() as $coord) {
-			list($c,$r) = sscanf($coord,'%[A-Z]%d');
-			$row[$r] = $r;
-			$col[$c] = strlen($c).$c;
-		}
-		if (!empty($row)) {
-			// Determine highest column and row
-			$highestRow = max($row);
-			$highestColumn = substr(max($col),1);
-		}
-
-		return array( 'row'	   => $highestRow,
-					  'column' => $highestColumn
-					);
-	}
-
-
-	/**
-	 * Get highest worksheet column
-	 *
-	 * @return string Highest column name
-	 */
-	public function getHighestColumn()
-	{
-		$colRow = $this->getHighestRowAndColumn();
-		return $colRow['column'];
-	}
-
-	/**
-	 * Get highest worksheet row
-	 *
-	 * @return int Highest row number
-	 */
-	public function getHighestRow()
-	{
-		$colRow = $this->getHighestRowAndColumn();
-		return $colRow['row'];
-	}
-
-
-	/**
-	 * Generate a unique ID for cache referencing
-	 *
-	 * @return string Unique Reference
-	 */
-	protected function _getUniqueID() {
-		if (function_exists('posix_getpid')) {
-			$baseUnique = posix_getpid();
-		} else {
-			$baseUnique = mt_rand();
-		}
-		return uniqid($baseUnique,true);
-	}
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		$this->_parent = $parent;
-		if (($this->_currentObject !== NULL) && (is_object($this->_currentObject))) {
-			$this->_currentObject->attach($parent);
-		}
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		return true;
-	}
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php
deleted file mode 100644
index d93ab05..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/DiscISAM.php
+++ /dev/null
@@ -1,205 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_DiscISAM
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Name of the file for this cache
-	 *
-	 * @var string
-	 */
-	private $_fileName = null;
-
-	/**
-	 * File handle for this cache file
-	 *
-	 * @var resource
-	 */
-	private $_fileHandle = null;
-
-	/**
-	 * Directory/Folder where the cache file is located
-	 *
-	 * @var string
-	 */
-	private $_cacheDirectory = NULL;
-
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			fseek($this->_fileHandle,0,SEEK_END);
-			$offset = ftell($this->_fileHandle);
-			fwrite($this->_fileHandle, serialize($this->_currentObject));
-			$this->_cellCache[$this->_currentObjectID]	= array('ptr' => $offset,
-																'sz'  => ftell($this->_fileHandle) - $offset
-															   );
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		fseek($this->_fileHandle,$this->_cellCache[$pCoord]['ptr']);
-		$this->_currentObject = unserialize(fread($this->_fileHandle,$this->_cellCache[$pCoord]['sz']));
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Get a new id for the new file name
-		$baseUnique = $this->_getUniqueID();
-		$newFileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
-		//	Copy the existing cell cache file
-		copy ($this->_fileName,$newFileName);
-		$this->_fileName = $newFileName;
-		//	Open the copied cell cache file
-		$this->_fileHandle = fopen($this->_fileName,'a+');
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the temporary cache file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$this->_cacheDirectory	= ((isset($arguments['dir'])) && ($arguments['dir'] !== NULL))
-									? $arguments['dir']
-									: PHPExcel_Shared_File::sys_get_temp_dir();
-
-		parent::__construct($parent);
-		if (is_null($this->_fileHandle)) {
-			$baseUnique = $this->_getUniqueID();
-			$this->_fileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
-			$this->_fileHandle = fopen($this->_fileName,'a+');
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		if (!is_null($this->_fileHandle)) {
-			fclose($this->_fileHandle);
-			unlink($this->_fileName);
-		}
-		$this->_fileHandle = null;
-	}	//	function __destruct()
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/ICache.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/ICache.php
deleted file mode 100644
index fd35e87..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/ICache.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_ICache
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-interface PHPExcel_CachedObjectStorage_ICache
-{
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell);
-
-    /**
-     * Add or Update a cell in cache
-     *
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function updateCacheData(PHPExcel_Cell $cell);
-
-    /**
-     * Fetch a cell from cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to retrieve
-     * @return PHPExcel_Cell 	Cell that was found, or null if not found
-     * @throws	Exception
-     */
-	public function getCacheData($pCoord);
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	Exception
-     */
-	public function deleteCacheData($pCoord);
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord);
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	array of string
-	 */
-	public function getCellList();
-
-	/**
-	 * Get the list of all cell addresses currently held in cache sorted by column and row
-	 *
-	 * @return	void
-	 */
-	public function getSortedCellList();
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent);
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable();
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/Igbinary.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/Igbinary.php
deleted file mode 100644
index 5d5daf4..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/Igbinary.php
+++ /dev/null
@@ -1,138 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Igbinary
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Igbinary extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			$this->_cellCache[$this->_currentObjectID] = igbinary_serialize($this->_currentObject);
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = igbinary_unserialize($this->_cellCache[$pCoord]);
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('igbinary_serialize')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/Memcache.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/Memcache.php
deleted file mode 100644
index 3e5fcb4..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/Memcache.php
+++ /dev/null
@@ -1,298 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Memcache
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Prefix used to uniquely identify cache data for this worksheet
-	 *
-	 * @var string
-	 */
-	private $_cachePrefix = null;
-
-	/**
-	 * Cache timeout
-	 *
-	 * @var integer
-	 */
-	private $_cacheTime = 600;
-
-	/**
-	 * Memcache interface
-	 *
-	 * @var resource
-	 */
-	private $_memcache = null;
-
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			$obj = serialize($this->_currentObject);
-			if (!$this->_memcache->replace($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
-				if (!$this->_memcache->add($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
-					$this->__destruct();
-					throw new Exception('Failed to store cell '.$this->_currentObjectID.' in MemCache');
-				}
-			}
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-		$this->_cellCache[$pCoord] = true;
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	void
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		//	Check if the requested entry is the current object, or exists in the cache
-		if (parent::isDataSet($pCoord)) {
-			if ($this->_currentObjectID == $pCoord) {
-				return true;
-			}
-			//	Check if the requested entry still exists in Memcache
-			$success = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
-			if ($success === false) {
-				//	Entry no longer exists in Memcache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
-			}
-			return true;
-		}
-		return false;
-	}	//	function isDataSet()
-
-
-	/**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (parent::isDataSet($pCoord)) {
-			$obj = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
-			if ($obj === false) {
-				//	Entry no longer exists in Memcache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
-			}
-		} else {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize($obj);
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	Exception
-     */
-	public function deleteCacheData($pCoord) {
-		//	Delete the entry from Memcache
-		$this->_memcache->delete($this->_cachePrefix.$pCoord.'.cache');
-
-		//	Delete the entry from our cell address array
-		parent::deleteCacheData($pCoord);
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Get a new id for the new file name
-		$baseUnique = $this->_getUniqueID();
-		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			if ($cellID != $this->_currentObjectID) {
-				$obj = $this->_memcache->get($this->_cachePrefix.$cellID.'.cache');
-				if ($obj === false) {
-					//	Entry no longer exists in Memcache, so clear it from the cache array
-					parent::deleteCacheData($cellID);
-					throw new Exception('Cell entry '.$cellID.' no longer exists in MemCache');
-				}
-				if (!$this->_memcache->add($newCachePrefix.$cellID.'.cache',$obj,NULL,$this->_cacheTime)) {
-					$this->__destruct();
-					throw new Exception('Failed to store cell '.$cellID.' in MemCache');
-				}
-			}
-		}
-		$this->_cachePrefix = $newCachePrefix;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-
-		//	Flush the Memcache cache
-		$this->__destruct();
-
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$memcacheServer	= (isset($arguments['memcacheServer']))	? $arguments['memcacheServer']	: 'localhost';
-		$memcachePort	= (isset($arguments['memcachePort']))	? $arguments['memcachePort']	: 11211;
-		$cacheTime		= (isset($arguments['cacheTime']))		? $arguments['cacheTime']		: 600;
-
-		if (is_null($this->_cachePrefix)) {
-			$baseUnique = $this->_getUniqueID();
-			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
-
-			//	Set a new Memcache object and connect to the Memcache server
-			$this->_memcache = new Memcache();
-			if (!$this->_memcache->addServer($memcacheServer, $memcachePort, false, 50, 5, 5, true, array($this, 'failureCallback'))) {
-				throw new Exception('Could not connect to MemCache server at '.$memcacheServer.':'.$memcachePort);
-			}
-			$this->_cacheTime = $cacheTime;
-
-			parent::__construct($parent);
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Memcache error handler
-	 *
-	 * @param	string	$host		Memcache server
-	 * @param	integer	$port		Memcache port
-     * @throws	Exception
-	 */
-	public function failureCallback($host, $port) {
-		throw new Exception('memcache '.$host.':'.$port.' failed');
-	}
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			$this->_memcache->delete($this->_cachePrefix.$cellID.'.cache');
-		}
-	}	//	function __destruct()
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('memcache_add')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/Memory.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/Memory.php
deleted file mode 100644
index f368e39..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/Memory.php
+++ /dev/null
@@ -1,109 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Memory
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		$this->_cellCache[$pCoord] = $cell;
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Return requested entry
-		return $this->_cellCache[$pCoord];
-	}	//	function getCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-
-		$newCollection = array();
-		foreach($this->_cellCache as $k => &$cell) {
-			$newCollection[$k] = clone $cell;
-			$newCollection[$k]->attach($parent);
-		}
-
-		$this->_cellCache = $newCollection;
-	}
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		//	Because cells are all stored as intact objects in memory, we need to detach each one from the parent
-		foreach($this->_cellCache as $k => &$cell) {
-			$cell->detach();
-			$this->_cellCache[$k] = null;
-		}
-		unset($cell);
-
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/MemoryGZip.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/MemoryGZip.php
deleted file mode 100644
index 6941231..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/MemoryGZip.php
+++ /dev/null
@@ -1,123 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_MemoryGZip
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			$this->_cellCache[$this->_currentObjectID] = gzdeflate(serialize($this->_currentObject));
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize(gzinflate($this->_cellCache[$pCoord]));
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/MemorySerialized.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/MemorySerialized.php
deleted file mode 100644
index 09f3b66..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/MemorySerialized.php
+++ /dev/null
@@ -1,123 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_MemorySerialized
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize($this->_cellCache[$pCoord]);
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/PHPTemp.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/PHPTemp.php
deleted file mode 100644
index c3f2bd9..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/PHPTemp.php
+++ /dev/null
@@ -1,192 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_PHPTemp
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Name of the file for this cache
-	 *
-	 * @var string
-	 */
-	private $_fileHandle = null;
-
-	/**
-	 * Memory limit to use before reverting to file cache
-	 *
-	 * @var integer
-	 */
-	private $_memoryCacheSize = null;
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			fseek($this->_fileHandle,0,SEEK_END);
-			$offset = ftell($this->_fileHandle);
-			fwrite($this->_fileHandle, serialize($this->_currentObject));
-			$this->_cellCache[$this->_currentObjectID]	= array('ptr' => $offset,
-																'sz'  => ftell($this->_fileHandle) - $offset
-															   );
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		fseek($this->_fileHandle,$this->_cellCache[$pCoord]['ptr']);
-		$this->_currentObject = unserialize(fread($this->_fileHandle,$this->_cellCache[$pCoord]['sz']));
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Open a new stream for the cell cache data
-		$newFileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
-		//	Copy the existing cell cache data to the new stream
-		fseek($this->_fileHandle,0);
-		while (!feof($this->_fileHandle)) {
-			fwrite($newFileHandle,fread($this->_fileHandle, 1024));
-		}
-		$this->_fileHandle = $newFileHandle;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the php://temp file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$this->_memoryCacheSize	= (isset($arguments['memoryCacheSize']))	? $arguments['memoryCacheSize']	: '1MB';
-
-		parent::__construct($parent);
-		if (is_null($this->_fileHandle)) {
-			$this->_fileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		if (!is_null($this->_fileHandle)) {
-			fclose($this->_fileHandle);
-		}
-		$this->_fileHandle = null;
-	}	//	function __destruct()
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/SQLite.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/SQLite.php
deleted file mode 100644
index 515573d..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/SQLite.php
+++ /dev/null
@@ -1,270 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_SQLite
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_SQLite extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Database table name
-	 *
-	 * @var string
-	 */
-	private $_TableName = null;
-
-	/**
-	 * Database handle
-	 *
-	 * @var resource
-	 */
-	private $_DBHandle = null;
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			if (!$this->_DBHandle->queryExec("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES('".$this->_currentObjectID."','".sqlite_escape_string(serialize($this->_currentObject))."')"))
-				throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		$query = "SELECT value FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		$cellResultSet = $this->_DBHandle->query($query,SQLITE_ASSOC);
-		if ($cellResultSet === false) {
-			throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-		} elseif ($cellResultSet->numRows() == 0) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-
-		$cellResult = $cellResultSet->fetchSingle();
-		$this->_currentObject = unserialize($cellResult);
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Is a value set for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return true;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$query = "SELECT id FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		$cellResultSet = $this->_DBHandle->query($query,SQLITE_ASSOC);
-		if ($cellResultSet === false) {
-			throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-		} elseif ($cellResultSet->numRows() == 0) {
-			//	Return null if requested entry doesn't exist in cache
-			return false;
-		}
-		return true;
-	}	//	function isDataSet()
-
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	Exception
-     */
-	public function deleteCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			$this->_currentObject->detach();
-			$this->_currentObjectID = $this->_currentObject = null;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		if (!$this->_DBHandle->queryExec($query))
-			throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-
-		$this->_currentCellIsDirty = false;
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	array of string
-	 */
-	public function getCellList() {
-		$query = "SELECT id FROM kvp_".$this->_TableName;
-		$cellIdsResult = $this->_DBHandle->unbufferedQuery($query,SQLITE_ASSOC);
-		if ($cellIdsResult === false)
-			throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-
-		$cellKeys = array();
-		foreach($cellIdsResult as $row) {
-			$cellKeys[] = $row['id'];
-		}
-
-		return $cellKeys;
-	}	//	function getCellList()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		//	Get a new id for the new table name
-		$tableName = str_replace('.','_',$this->_getUniqueID());
-		if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
-													AS SELECT * FROM kvp_'.$this->_TableName))
-			throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-
-		//	Copy the existing cell cache file
-		$this->_TableName = $tableName;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the temporary cache file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 */
-	public function __construct(PHPExcel_Worksheet $parent) {
-		parent::__construct($parent);
-		if (is_null($this->_DBHandle)) {
-			$this->_TableName = str_replace('.','_',$this->_getUniqueID());
-			$_DBName = ':memory:';
-
-			$this->_DBHandle = new SQLiteDatabase($_DBName);
-			if ($this->_DBHandle === false)
-				throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-			if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)'))
-				throw new Exception(sqlite_error_string($this->_DBHandle->lastError()));
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		$this->_DBHandle = null;
-	}	//	function __destruct()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('sqlite_open')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/SQLite3.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/SQLite3.php
deleted file mode 100644
index b867b4d..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/SQLite3.php
+++ /dev/null
@@ -1,277 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_SQLite3
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_SQLite3 extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Database table name
-	 *
-	 * @var string
-	 */
-	private $_TableName = null;
-
-	/**
-	 * Database handle
-	 *
-	 * @var resource
-	 */
-	private $_DBHandle = null;
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			$query = $this->_DBHandle->prepare("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES(:id,:data)");
-			$query->bindValue('id',$this->_currentObjectID,SQLITE3_TEXT);
-			$query->bindValue('data',serialize($this->_currentObject),SQLITE3_BLOB);
-			$result = $query->execute();
-			if ($result === false)
-				throw new Exception($this->_DBHandle->lastErrorMsg());
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-     * @throws	Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		$query = "SELECT value FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		$cellResult = $this->_DBHandle->querySingle($query);
-		if ($cellResult === false) {
-			throw new Exception($this->_DBHandle->lastErrorMsg());
-		} elseif (is_null($cellResult)) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-
-		$this->_currentObject = unserialize($cellResult);
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 *	Is a value set for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return true;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$query = "SELECT id FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		$cellResult = $this->_DBHandle->querySingle($query);
-		if ($cellResult === false) {
-			throw new Exception($this->_DBHandle->lastErrorMsg());
-		} elseif (is_null($cellResult)) {
-			//	Return null if requested entry doesn't exist in cache
-			return false;
-		}
-		return true;
-	}	//	function isDataSet()
-
-
-    /**
-     *	Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	Exception
-     */
-	public function deleteCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			$this->_currentObject->detach();
-			$this->_currentObjectID = $this->_currentObject = null;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		$result = $this->_DBHandle->exec($query);
-		if ($result === false)
-			throw new Exception($this->_DBHandle->lastErrorMsg());
-
-		$this->_currentCellIsDirty = false;
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	array of string
-	 */
-	public function getCellList() {
-		$query = "SELECT id FROM kvp_".$this->_TableName;
-		$cellIdsResult = $this->_DBHandle->query($query);
-		if ($cellIdsResult === false)
-			throw new Exception($this->_DBHandle->lastErrorMsg());
-
-		$cellKeys = array();
-		while ($row = $cellIdsResult->fetchArray(SQLITE3_ASSOC)) {
-			$cellKeys[] = $row['id'];
-		}
-
-		return $cellKeys;
-	}	//	function getCellList()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		//	Get a new id for the new table name
-		$tableName = str_replace('.','_',$this->_getUniqueID());
-		if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
-		                                       AS SELECT * FROM kvp_'.$this->_TableName))
-			throw new Exception($this->_DBHandle->lastErrorMsg());
-
-		//	Copy the existing cell cache file
-		$this->_TableName = $tableName;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the temporary cache file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 */
-	public function __construct(PHPExcel_Worksheet $parent) {
-		parent::__construct($parent);
-		if (is_null($this->_DBHandle)) {
-			$this->_TableName = str_replace('.','_',$this->_getUniqueID());
-			$_DBName = ':memory:';
-
-			$this->_DBHandle = new SQLite3($_DBName);
-			if ($this->_DBHandle === false)
-				throw new Exception($this->_DBHandle->lastErrorMsg());
-			if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)'))
-				throw new Exception($this->_DBHandle->lastErrorMsg());
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		if (!is_null($this->_DBHandle)) {
-			$this->_DBHandle->close();
-		}
-		$this->_DBHandle = null;
-	}	//	function __destruct()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!class_exists('SQLite3',FALSE)) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
diff --git a/admin/survey/excel/PHPExcel/CachedObjectStorage/Wincache.php b/admin/survey/excel/PHPExcel/CachedObjectStorage/Wincache.php
deleted file mode 100644
index 1534448..0000000
--- a/admin/survey/excel/PHPExcel/CachedObjectStorage/Wincache.php
+++ /dev/null
@@ -1,280 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2012 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_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version	1.7.8, 2012-10-12
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Wincache
- *
- * @category   PHPExcel
- * @package	PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Prefix used to uniquely identify cache data for this worksheet
-	 *
-	 * @var string
-	 */
-	private $_cachePrefix = null;
-
-	/**
-	 * Cache timeout
-	 *
-	 * @var integer
-	 */
-	private $_cacheTime = 600;
-
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	Exception
-     */
-	private function _storeData() {
-		if ($this->_currentCellIsDirty) {
-			$this->_currentObject->detach();
-
-			$obj = serialize($this->_currentObject);
-			if (wincache_ucache_exists($this->_cachePrefix.$this->_currentObjectID.'.cache')) {
-				if (!wincache_ucache_set($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
-					$this->__destruct();
-					throw new Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
-				}
-			} else {
-				if (!wincache_ucache_add($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
-					$this->__destruct();
-					throw new Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
-				}
-			}
-			$this->_currentCellIsDirty = false;
-		}
-
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-	/**
-	 * Add or Update a cell in cache identified by coordinate address
-	 *
-	 * @param	string			$pCoord		Coordinate address of the cell to update
-	 * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	void
-	 * @throws	Exception
-	 */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-		$this->_cellCache[$pCoord] = true;
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		//	Check if the requested entry is the current object, or exists in the cache
-		if (parent::isDataSet($pCoord)) {
-			if ($this->_currentObjectID == $pCoord) {
-				return true;
-			}
-			//	Check if the requested entry still exists in cache
-			$success = wincache_ucache_exists($this->_cachePrefix.$pCoord.'.cache');
-			if ($success === false) {
-				//	Entry no longer exists in Wincache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
-			}
-			return true;
-		}
-		return false;
-	}	//	function isDataSet()
-
-
-	/**
-	 * Get cell at a specific coordinate
-	 *
-	 * @param	string			$pCoord		Coordinate of the cell
-	 * @throws	Exception
-	 * @return	PHPExcel_Cell	Cell that was found, or null if not found
-	 */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		$obj = null;
-		if (parent::isDataSet($pCoord)) {
-			$success = false;
-			$obj = wincache_ucache_get($this->_cachePrefix.$pCoord.'.cache', $success);
-			if ($success === false) {
-				//	Entry no longer exists in WinCache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
-			}
-		} else {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize($obj);
-		//	Re-attach the parent worksheet
-		$this->_currentObject->attach($this->_parent);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Delete a cell in cache identified by coordinate address
-	 *
-	 * @param	string			$pCoord		Coordinate address of the cell to delete
-	 * @throws	Exception
-	 */
-	public function deleteCacheData($pCoord) {
-		//	Delete the entry from Wincache
-		wincache_ucache_delete($this->_cachePrefix.$pCoord.'.cache');
-
-		//	Delete the entry from our cell address array
-		parent::deleteCacheData($pCoord);
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Get a new id for the new file name
-		$baseUnique = $this->_getUniqueID();
-		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			if ($cellID != $this->_currentObjectID) {
-				$success = false;
-				$obj = wincache_ucache_get($this->_cachePrefix.$cellID.'.cache', $success);
-				if ($success === false) {
-					//	Entry no longer exists in WinCache, so clear it from the cache array
-					parent::deleteCacheData($cellID);
-					throw new Exception('Cell entry '.$cellID.' no longer exists in Wincache');
-				}
-				if (!wincache_ucache_add($newCachePrefix.$cellID.'.cache', $obj, $this->_cacheTime)) {
-					$this->__destruct();
-					throw new Exception('Failed to store cell '.$cellID.' in Wincache');
-				}
-			}
-		}
-		$this->_cachePrefix = $newCachePrefix;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-
-		//	Flush the WinCache cache
-		$this->__destruct();
-
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$cacheTime	= (isset($arguments['cacheTime']))	? $arguments['cacheTime']	: 600;
-
-		if (is_null($this->_cachePrefix)) {
-			$baseUnique = $this->_getUniqueID();
-			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
-			$this->_cacheTime = $cacheTime;
-
-			parent::__construct($parent);
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			wincache_ucache_delete($this->_cachePrefix.$cellID.'.cache');
-		}
-	}	//	function __destruct()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('wincache_ucache_add')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}