File Source for Function.php

<?php
/**
* PHPExcel
*
* Copyright (c) 2006 - 2011 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_Calculation
* @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
* @version 1.7.6, 2011-02-27
*/
/**
* PHPExcel_Calculation_Function
*
* @category PHPExcel
* @package PHPExcel_Calculation
* @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
*/
class PHPExcel_Calculation_Function {
/* Function categories */
const CATEGORY_CUBE = 'Cube';
const CATEGORY_DATABASE = 'Database';
const CATEGORY_DATE_AND_TIME = 'Date and Time';
const CATEGORY_ENGINEERING = 'Engineering';
const CATEGORY_FINANCIAL = 'Financial';
const CATEGORY_INFORMATION = 'Information';
const CATEGORY_LOGICAL = 'Logical';
const CATEGORY_LOOKUP_AND_REFERENCE = 'Lookup and Reference';
const CATEGORY_MATH_AND_TRIG = 'Math and Trig';
const CATEGORY_STATISTICAL = 'Statistical';
const CATEGORY_TEXT_AND_DATA = 'Text and Data';
/**
* Category (represented by CATEGORY_*)
*
* @var string
*/
private $_category;
/**
* Excel name
*
* @var string
*/
private $_excelName;
/**
* PHPExcel name
*
* @var string
*/
private $_phpExcelName;
/**
* Create a new PHPExcel_Calculation_Function
*
* @param string $pCategory Category (represented by CATEGORY_*)
* @param string $pExcelName Excel function name
* @param string $pPHPExcelName PHPExcel function mapping
* @throws Exception
*/
public function __construct($pCategory = null, $pExcelName = null, $pPHPExcelName = null)
{
if (!is_null($pCategory) && !is_null($pExcelName) && !is_null($pPHPExcelName)) {
// Initialise values
$this->_category = $pCategory;
$this->_excelName = $pExcelName;
$this->_phpExcelName = $pPHPExcelName;
} else {
throw new Exception("Invalid parameters passed.");
}
}
/**
* Get Category (represented by CATEGORY_*)
*
* @return string
*/
public function getCategory() {
return $this->_category;
}
/**
* Set Category (represented by CATEGORY_*)
*
* @param string $value
* @throws Exception
*/
public function setCategory($value = null) {
if (!is_null($value)) {
$this->_category = $value;
} else {
throw new Exception("Invalid parameter passed.");
}
}
/**
* Get Excel name
*
* @return string
*/
public function getExcelName() {
return $this->_excelName;
}
/**
* Set Excel name
*
* @param string $value
*/
public function setExcelName($value) {
$this->_excelName = $value;
}
/**
* Get PHPExcel name
*
* @return string
*/
public function getPHPExcelName() {
return $this->_phpExcelName;
}
/**
* Set PHPExcel name
*
* @param string $value
*/
public function setPHPExcelName($value) {
$this->_phpExcelName = $value;
}
}

Source for file Function.php