首先：下载好PHPExcel类库文件
视图层：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<title></title>
</head>
<body>
<form action="<?php echo site_url('admin/excel/import_pro') ?>" method='post' enctype="multipart/form-data" >
<input type="file" name='file_stu' />
<input type="submit" value='导入' />
</form>
</body>
</html>
控制器：
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Excel extends CI_Controller{
function __construct()
{
parent::__construct();
//$this->load->library('PHPExcel');
//$this ->load ->library('PHPExcel/IOFactory');
}
//从数据表导出到excel
public function export($table_name){
$query = $this -> db -> get($table_name);
//print_r($query);
if(!$query)return false;
// StartingthePHPExcellibrary
//加载PHPExcel类
$this->load->library('PHPExcel');
$this ->load ->library('PHPExcel/IOFactory');
$objPHPExcel = new PHPExcel();
$objPHPExcel->getProperties()-> setTitle("export") -> setDescription("none");
$objPHPExcel -> setActiveSheetIndex(0);
// Fieldnamesinthefirstrow
$fields = $query -> list_fields();
$col = 0;
foreach($fields as $field){
$objPHPExcel -> getActiveSheet() -> setCellValueByColumnAndRow($col, 1,$field);
$col++;
}
// Fetchingthetabledata
$row = 2;
foreach($query->result() as $data)
{
$col = 0;
foreach($fields as $field)
{
$objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col,$row,$data->$field);
$col++;
}
$row++;
}
$objPHPExcel -> setActiveSheetIndex(0);
$objWriter = IOFactory :: createWriter($objPHPExcel, 'Excel5');
// Sendingheaderstoforcetheusertodownloadthefile
header('Content-Type:application/vnd.ms-excel');
//header('Content-Disposition:attachment;filename="Products_' . date('dMy') . '.xls"');
header('Content-Disposition:attachment;filename="Brand_' . date('Y-m-d') . '.xls"');
header('Cache-Control:max-age=0');
$objWriter -> save('php://output');
}
//从excel导入到数据表
function import(){
$this->load->view('excel_import.html');
}
//从excel导入到数据表
function import_pro(){
//要处理的excel文件
//$filename = './sampleData/example2.xls';//指定文件
//用用选择excel文件
//print_r($_FILES);exit;
$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' );
}
$savePath = "Public/uploads/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' );
}
//要获得新的文件路径+名字
$fullpath = $savePath.$file_name;
//echo $fullpath;
$re = $this->read($fullpath,'utf-8');
//var_dump($re);
return $re;
}
public function read($filename,$encode='utf-8'){
$this ->load ->library('PHPExcel/IOFactory');
$objReader = IOFactory::createReader('Excel5');
$objReader->setReadDataOnly(true);
$objPHPExcel = $objReader->load($filename);
$objWorksheet = $objPHPExcel->getActiveSheet();
$highestRow = $objWorksheet->getHighestRow();
//echo $highestRow;
$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;
}
}
具体内容，自己操作便知！