PHPExcel 设置excel单元格宽高

#设置单元格宽高
$objPHPExcel->getActiveSheet()->getDefaultRowDimension()->setRowHeight(20);#设置单元格行高
$objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(40);#设置单元格宽度
$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(10);
$objPHPExcel->getActiveSheet()->getColumnDimension('C')->setWidth(20);
$objPHPExcel->getActiveSheet()->getColumnDimension('D')->setWidth(15);