Setting width of spreadsheet cell using PHPExcel

It's a subtle difference, but this works fine for me:

$objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(10);

Notice, the difference between getColumnDimensionByColumn and getColumnDimension

Also, I'm not even setting AutoSize and it works fine.

setAutoSize method must come before setWidth:

$objPHPExcel->getActiveSheet()->getColumnDimensionByColumn('C')->setAutoSize(false);
$objPHPExcel->getActiveSheet()->getColumnDimensionByColumn('C')->setWidth('10');