What are common issues when using Spreadsheet Excel Writer in PHP, specifically related to file readability in Excel?

One common issue when using Spreadsheet Excel Writer in PHP is that the generated Excel file may not be readable in certain versions of Excel due to compatibility issues. To solve this problem, you can explicitly set the Excel file format to a more universal format like Excel5. 

$excel = new Spreadsheet_Excel_Writer();
$excel->send('test.xls');
$worksheet =& $excel->addWorksheet('Sheet1');

// Your code to add data to the worksheet

$excel->close();

Keywords

Spreadsheet Excel Writer PHP file readability Excel issues

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