tp5 phpexcel 导入，导出 excel表格

一，Excel导入：

1，composer 安装phpExcel:

composer require phpoffice/phpexcel  （好像只有Classes里面的文件有用，其他可删除）

2，前端代码

 <form method="post" action="{:url('student/savestudentImport')}" class="form-signin" enctype="multipart/form-data" >
     <input name="excel" type="file" class="form-control">
     <button class="btn btn-lg btn-primary btn-block">导入button>
 form>

3，控制器

 public function savestudentImport(){
         //import('phpexcel.PHPExcel', EXTEND_PATH);//方法二
         vendor("PHPExcel.PHPExcel"); //方法一
         $objPHPExcel = new \PHPExcel();

         //获取表单上传文件
         $file = request()->file('excel');
         $info = $file->validate(['size'=>15678,'ext'=>'xlsx,xls,csv'])->move(ROOT_PATH . 'public' . DS . 'excel');
         if($info){
             $exclePath = $info->getSaveName();  //获取文件名
             $file_name = ROOT_PATH . 'public' . DS . 'excel' . DS . $exclePath;   //上传文件的地址
             $objReader =\PHPExcel_IOFactory::createReader('Excel2007');
             $obj_PHPExcel =$objReader->load($file_name, $encode = 'utf-8');  //加载文件内容,编码utf-8
             echo "<pre>";
             $excel_array=$obj_PHPExcel->getsheet(0)->toArray();   //转换为数组格式
             array_shift($excel_array);  //删除第一个数组(标题);
             $data = [];
             $i=0;
             foreach($excel_array as $k=>$v) {
                 $data[$k]['title'] = $v[0];  //数据表字段赋值
                 $i++;
             }
            $success=Db::name('t_station')->insertAll($data); //批量插入数据
            $error=$i-$success;
             echo "总{$i}条，成功{$success}条，失败{$error}条。";
         }else{
             // 上传失败获取错误信息
             echo $file->getError();
         }
     }

二，Excel导出

 error_reporting(E_ALL);
 ini_set('display_errors', TRUE);
 ini_set('display_startup_errors', TRUE);

 vendor("PHPExcel.PHPExcel");
 //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
 $tableheader = array('学号','姓名','性别','年龄','班级');
 //填充表头信息
 for($i = 0;$i < count($tableheader);$i++) {
     $excel->getActiveSheet()->setCellValue("$letter[$i]1","$tableheader[$i]");
 }

 //表格数组
 $data = array(
     array('1','小王','男','20','100'),
     array('2','小李','男','20','101'),
     array('3','小张','女','20','102'),
     array('4','小赵','女','20','103')
 );
 //填充表格信息
 for ($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="testdata.xls"');
 header("Content-Transfer-Encoding:binary");
 $write->save('php://output');