PHPEXCEL 給某幾列單獨設置左對齊，居中對齊

F2單元格到H800單元格區間全部水平左對齊

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