$objPHPExcel = new PHPExcel();
$objPHPExcel->setActiveSheetIndex(0);
//set default styles
$objPHPExcel->getDefaultStyle()->getFont()->setName('Arial'); //设置默认的字体
$objPHPExcel->getDefaultStyle()->getFont()->setSize(10); //设置默认的字体大小
//set border color
$objPHPExcel->getActiveSheet()->getStyle($key)->getBorders()->getTop()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle($key)->getBorders()->getRight()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle($key)->getBorders()->getBottom()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle($key)->getBorders()->getLeft()->getColor()->setARGB('FF993300');
//设置行高
$objPHPExcel->getActiveSheet()->getRowDimension($i)->setRowHeight(14.25);