objPHPExcel

//合并

       $objPHPExcel->getActiveSheet()->mergeCells('L5:L'.$zong);//合并

        $objPHPExcel->getActiveSheet()->mergeCells('M5:M'.$zong);//合并

//居中

$objPHPExcel->getActiveSheet()->getStyle('M5:M'.$zong)->getAlignment()->setVertical(\PHPExcel_Style_Alignment::VERTICAL_CENTER);//垂直居中 $objPHPExcel->getActiveSheet()->getStyle('M5:M'.$zong)->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);//左右居中

//加颜色

$objPHPExcel->getActiveSheet()->getStyle('A4:M4')->getFill()->setFillType(PHPExcel_Style_Fill::FILL_SOLID);

  $objPHPExcel->getActiveSheet()->getStyle('A4:M4')->getFill()->getStartColor()->setARGB('3399cc');

//所有数据加边框

        $styleThinBlackBorderOutline = array(

            'borders' => array(

                'allborders' => array( //设置全部边框

                    'style' => \PHPExcel_Style_Border::BORDER_THIN //粗的是thick

                ),

            ),

        );

        $objPHPExcel->getActiveSheet()->getStyle('A1:M'.$zong)->applyFromArray($styleThinBlackBorderOutline);