利用phpExcel实现Excel数据的导入导出(全步骤详细解析)

<form method="post" action="php文件" enctype="multipart/form-data">
         <h3>导入Excel表：</h3><input  type="file" name="file_stu" />

           <input type="submit"  value="导入" />
</form>

 if (! empty ( $_FILES ['file_stu'] ['name'] ))

 {
    $tmp_file = $_FILES ['file_stu'] ['tmp_name'];
    $file_types = explode ( ".", $_FILES ['file_stu'] ['name'] );
    $file_type = $file_types [count ( $file_types ) - 1];

     /*判别是不是.xls文件，判别是不是excel文件*/
     if (strtolower ( $file_type ) != "xls")             
    {
          $this->error ( '不是Excel文件，重新上传' );
     }

    /*设置上传路径*/
     $savePath = SITE_PATH . '/public/upfile/Excel/';

    /*以时间来命名上传的文件*/
     $str = date ( 'Ymdhis' );
     $file_name = $str . "." . $file_type;

     /*是否上传成功*/
     if (! copy ( $tmp_file, $savePath . $file_name ))
      {
          $this->error ( '上传失败' );
      }

    /*

       *对上传的Excel数据进行处理生成编程数据,这个函数会在下面第三步的ExcelToArray类中

      注意：这里调用执行了第三步类里面的read函数，把Excel转化为数组并返回给$res,再进行数据库写入

    */
  $res = Service ( 'ExcelToArray' )->read ( $savePath . $file_name );

   /*

        重要代码 解决Thinkphp M、D方法不能调用的问题  

        如果在thinkphp中遇到M 、D方法失效时就加入下面一句代码

    */
   //spl_autoload_register ( array ('Think', 'autoload' ) );

   /*对生成的数组进行数据库的写入*/
   foreach ( $res as $k => $v )
   {
       if ($k != 0)
      {
           $data ['uid'] = $v [0];
           $data ['password'] = sha1 ( '111111' );
           $data ['email'] = $v [1];

           $data ['uname'] = $v [3];

          $data ['institute'] = $v [4];
         $result = M ( 'user' )->add ( $data );
         if (! $result)
         {
              $this->error ( '导入数据库失败' );
          }
      }
   }

}

class ExcelToArrary extends Service{

 public function __construct() {

     /*导入phpExcel核心类    注意 ：你的路径跟我不一样就不能直接复制*/
     include_once('./Excel/PHPExcel.php');
 }

/**

* 读取excel $filename 路径文件名 $encode 返回数据的编码 默认为utf8

*以下基本都不要修改

*/

public function read($filename,$encode='utf-8'){

          $objReader = PHPExcel_IOFactory::createReader('Excel5');

          $objReader->setReadDataOnly(true);

          $objPHPExcel = $objReader->load($filename);

          $objWorksheet = $objPHPExcel->getActiveSheet();

　　　 $highestRow = $objWorksheet->getHighestRow();
　　　 $highestColumn = $objWorksheet->getHighestColumn();
　　    $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);
 　　   $excelData = array();
 　　　for ($row = 1; $row <= $highestRow; $row++) {
    　　  for ($col = 0; $col < $highestColumnIndex; $col++) {
                 $excelData[$row][] =(string)$objWorksheet->getCellByColumnAndRow($col, $row)->getValue();
           }
         }
        return $excelData;

    }    

 }

class ExcelToArrary extends Service{

       public function __construct() {

              /*导入phpExcel核心类    注意 ：你的路径跟我不一样就不能直接复制*/
               include_once('./Excel/PHPExcel.php');
       }

     /* 导出excel函数*/
    public function push($data,$name='Excel'){

          error_reporting(E_ALL);
          date_default_timezone_set('Europe/London');
         $objPHPExcel = new PHPExcel();

        /*以下是一些设置 ，什么作者  标题啊之类的*/
         $objPHPExcel->getProperties()->setCreator("转弯的阳光")
                               ->setLastModifiedBy("转弯的阳光")
                               ->setTitle("数据EXCEL导出")
                               ->setSubject("数据EXCEL导出")
                               ->setDescription("备份数据")
                               ->setKeywords("excel")
                              ->setCategory("result file");
         /*以下就是对处理Excel里的数据， 横着取数据，主要是这一步，其他基本都不要改*/
        foreach($data as $k => $v){

             $num=$k+1;
             $objPHPExcel->setActiveSheetIndex(0)

                         //Excel的第A列，uid是你查出数组的键值，下面以此类推
                          ->setCellValue('A'.$num, $v['uid'])   
                          ->setCellValue('B'.$num, $v['email'])
                          ->setCellValue('C'.$num, $v['password'])
            }

            $objPHPExcel->getActiveSheet()->setTitle('User');
            $objPHPExcel->setActiveSheetIndex(0);
             header('Content-Type: application/vnd.ms-excel');
             header('Content-Disposition: attachment;filename="'.$name.'.xls"');
             header('Cache-Control: max-age=0');
             $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
             $objWriter->save('php://output');
             exit;
      }