Upload et modification fichier excel via PHP

$file = ($_FILES['fichier']['name'] ) ; // le fichier doit dj exister
	fopen($file, "w" ) or die ("marche pas"); //on ouvre le fichier

fopen ("fichier.txt",r

<?php

set_time_limit(10);

require_once "excelWriter/class.writeexcel_workbook.inc.php";
require_once "excelWriter/class.writeexcel_worksheet.inc.php";

$var= 'tut.xls';

	
	$workbook =& new writeexcel_workbook(fopen($var,"r+")) or die ("Error");
	$worksheet =& $workbook->addworksheet("Tut 1") or die ("Error 2");
	
	//$book=$excel->Workbooks(1) ;
	//$sheet=$book->Worksheets(1) ;
	# The general syntax is write($row, $column, $token). Note that row and
	# column are zero indexed
	#
	
	# Write some text
	$worksheet->write(2, 0,  "Meuhhh !");
	$worksheet->write(2 ,1,  "Pouet");
	$worksheet->write(2, 2,  "Plop");

	$workbook->close();

	header("Content-Type: application/x-msexcel; name=\"example-simple.xls\"");
	header("Content-Disposition: inline; filename=\"example-simple.xls\"");
	$fh=fopen($fname, "rb");
	fpassthru($fh);
	unlink($fname);
	
	

?>