<?php
/**
* Simple excel generating from PHP5
*
* This is one of my utility-classes.
*
* The MIT License
*
* Copyright (c) 2007 Oliver Schwarz
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* @package Utilities
* @author Oliver Schwarz <[email protected]>
* @version 1.0
*/
/**
* Generating excel documents on-the-fly from PHP5
*
* Uses the excel XML-specification to generate a native
* XML document, readable/processable by excel.
*
* @package Utilities
* @subpackage Excel
* @author Oliver Schwarz <[email protected]>
* @version 1.0
*
* @todo Add error handling (array corruption etc.)
* @todo Write a wrapper method to do everything on-the-fly
*/
class Excel_XML
{
/**
* Header of excel document (prepended to the rows)
*
* Copied from the excel xml-specs.
*
* @access private
* @var string
*/
private $header = "<?xml version=\"1.0\" encoding=\"UTF-8\"?\>
<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"
xmlns:x=\"urn:schemas-microsoft-com:office:excel\"
xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"
xmlns:html=\"http://www.w3.org/TR/REC-html40\">";
/**
* Footer of excel document (appended to the rows)
*
* Copied from the excel xml-specs.
*
* @access private
* @var string
*/
private $footer = "</Workbook>";
/**
* Document lines (rows in an array)
*
* @access private
* @var array
*/
private $lines = array ();
/**
* Worksheet title
*
* Contains the title of a single worksheet
*
* @access private
* @var string
*/
private $worksheet_title = "Table1";
/**
* Add a single row to the $document string
*
* @access private
* @param array 1-dimensional array
* @todo Row-creation should be done by $this->addArray
*/
private function addRow ($array)
{
// initialize all cells for this row
$cells = "";
// foreach key -> write value into cells
foreach ($array as $k => $v):
$cells .= "<Cell><Data ss:Type=\"String\">" . utf8_encode($v) . "</Data></Cell>\n";
endforeach;
// transform $cells content into one row
$this->lines[] = "<Row>\n" . $cells . "</Row>\n";
}
/**
* Add an array to the document
*
* This should be the only method needed to generate an excel
* document.
*
* @access public
* @param array 2-dimensional array
* @todo Can be transfered to __construct() later on
*/
public function addArray ($array)
{
// run through the array and add them into rows
foreach ($array as $k => $v):
$this->addRow ($v);
endforeach;
}
/**
* Set the worksheet title
*
* Checks the string for not allowed characters (:\/?*),
* cuts it to maximum 31 characters and set the title. Damn
* why are not-allowed chars nowhere to be found? Windows
* help's no help...
*
* @access public
* @param string $title Designed title
*/
public function setWorksheetTitle ($title)
{
// strip out special chars first
$title = preg_replace ("/[\\\|:|\/|\?|\*|\[|\]]/", "", $title);
// now cut it to the allowed length
$title = substr ($title, 0, 31);
// set title
$this->worksheet_title = $title;
}
/**
* Generate the excel file
*
* Finally generates the excel file and uses the header() function
* to deliver it to the browser.
*
* @access public
* @param string $filename Name of excel file to generate (...xls)
*/
function generateXML ($filename)
{
// deliver header (as recommended in php manual)
header("Content-Type: application/vnd.ms-excel; charset=UTF-8");
header("Content-Disposition: inline; filename=\"" . $filename . ".xls\"");
// print out document to the browser
// need to use stripslashes for the damn ">"
echo stripslashes ($this->header);
echo "\n<Worksheet ss:Name=\"" . $this->worksheet_title . "\">\n<Table>\n";
echo "<Column ss:Index=\"1\" ss:AutoFitWidth=\"0\" ss:Width=\"110\"/>\n";
echo implode ("\n", $this->lines);
echo "</Table>\n</Worksheet>\n";
echo $this->footer;
}
}
?>
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