phpExcell generating extra worksheets - php

Question

I'm trying to use phpExell in my Zend application to print out a Excel file with multiple work sheets.
In my controller class I have the following global variable...
public $objPHPExcel;
which is initialized in an action function like so...
$this->objPHPExcel = new PHPExcel();
The action then iterates through some database calls, building a report. On each iteration, it calls the following function, passing in the index of the worksheet as an integer, an array of data to be printed out, and a string containing the name of the worksheet.
protected function buildWorksheet($index, $report, $repName) {
//build new worksheet after default
if($index > 0) {
$objWorksheet = $this->objPHPExcel->createSheet();
$this->objPHPExcel->addSheet($objWorksheet);
} else {
$this->objPHPExcel->setActiveSheetIndex($index);
$objWorksheet = $this->objPHPExcel->getActiveSheet();
}
//write the worksheet
$col = 0;
$row = 1;
foreach($report as $entry) {
foreach($entry as $key => $value) {
$objWorksheet->setCellValueByColumnAndRow($col, $row, $value);
$col++;
}
$row++;
$col = 0;
}
$objWorksheet->setTitle($repName);
}
Then, back in the action I print out the excel file...
$objWriter = PHPExcel_IOFactory::createWriter($this->objPHPExcel, 'Excel5');
ob_start();
if ( headers_sent() ) die("**Error: headers sent");
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header('Content-Disposition: attachment;filename="simple.xls"');
header("Content-Transfer-Encoding: binary");
ob_clean();
$objWriter->save('php://output');
exit();
When I open the file in Excel, I get the following message...
Excel found unreadable content in 'simple.xls'. Do you want to recover the contents of this workbook?
I click yes. Then get two "Renamed invalid sheet name.' repair error messages. The file contains a worksheet for each iteration, but for everyone after the default sheet, it adds an extra sheet. Why is it creating the extra spreadsheet?

Answer 1

/**
* Create sheet __and add it to this workbook__
*
* #param int|null $iSheetIndex Index where sheet should go (0,1,..., or null for last)
* #return PHPExcel_Worksheet
* #throws Exception
*/
public function createSheet($iSheetIndex = null)

Answer 2

Turns out you don't need the call to addSheet. createSheet() automatically does this for you.
I removed
$this->objPHPExcel->addSheet($objWorksheet);
and it works fine now.