PHPEXCEL 给某几列单独设置左对齐，居中对齐

F2单元格到H800单元格区间全部水平左对齐

$objPHPExcel = new \PHPExcel();  
$objPHPExcel->getActiveSheet()->getstyle("F2:H800")->getAlignment()
->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_LEFT);