php读取和导出Excel文件

require 'vendor/PHPExcel/PHPExcel.php';
require 'vendor/PHPExcel/PHPExcel/IOFactory.php';

public function dull_url(){

        $reader = \PHPExcel_IOFactory::createReader('Excel2007'); //设置以Excel5格式(Excel97-2003工作簿)
        $PHPExcel = $reader->load("AD.xlsx"); // 载入excel文件
        $sheet = $PHPExcel->getSheet(0); // 读取第一個工作表
        $highestRow = $sheet->getHighestRow(); // 取得总行数
        $highestColumm = $sheet->getHighestColumn(); // 取得总列数  

        /** 循环读取每个单元格的数据 */
        $data = array();
        for ($row = 2; $row <= $highestRow; $row++){//行数是以第1行开始
            $dataset = array();
            for ($column = 'A'; $column <= $highestColumm; $column++) {//列数是以A列开始
                if($column == 'A'){
                    $url = 'http://www.XXX.com/s/?k='. urlencode(trim($sheet->getCell($column.$row)->getValue()));
                }
                if($column == 'C'){
                    $dataset[] = $url;
                }else{
                    $dataset[] = trim($sheet->getCell($column.$row)->getValue());
                }
                //echo $column.$row.":".$sheet->getCell($column.$row)->getValue()."<br />";
                //echo $sheet->getCell($column.$row)->getValue()."  ";
            }
            $data[] = $dataset;
        }
        $this->dull_url_data($data);
    }
    function dull_url_data($data){
        header("Content-Type:text/html;charset=utf-8");
        //include_once('../../ClassLibrary/PHPExcel-1.8/Classes/PHPExcel.php');  

        error_reporting(E_ALL);
        ini_set('display_errors', TRUE);
        ini_set('display_startup_errors', TRUE);
                //创建对象
        $excel = new \PHPExcel();
        //Excel表格式,这里简略写了8列
        $letter = array('A','B','C','D','E','F','F','G');
        //表头数组
        $tableheader = array('元件型号','制造商','搜索结果页链接');
        //填充表头信息
        for($i = 0;$i < count($tableheader);$i++) {
            $excel->getActiveSheet()->setCellValue("$letter[$i]1","$tableheader[$i]");
        }  

        //填充表格信息
        for ($i = 2;$i <= count($data) + 1;$i++) {
            $j = 0;
            foreach ($data[$i - 2] as $key=>$value) {
                $excel->getActiveSheet()->setCellValue("$letter[$j]$i","$value");
                $j++;
            }
        }  

        //创建Excel输入对象
        $write = new \PHPExcel_Writer_Excel5($excel);
        header("Pragma: public");
        header("Expires: 0");
        header("Cache-Control:must-revalidate, post-check=0, pre-check=0");
        header("Content-Type:application/force-download");
        header("Content-Type:application/vnd.ms-execl");
        header("Content-Type:application/octet-stream");
        header("Content-Type:application/download");;
        header('Content-Disposition:attachment;filename="url_data.xls"');
        header("Content-Transfer-Encoding:binary");
        $write->save('php://output');  exit;
    }