1.php部分（本例thinkphp5.1）：

下載PHPExcel了擴充套件http://phpexcel.codeplex.com/

<?php
namespace app\admin\controller;

//引入phpExcel
use Env;
use vendor\PHPExcel\PHPExcel;

class Upload
{
    //上傳Excel  匯入資料
    public function import(){
        include_once(Env::get('root_path').'vendor/PHPExcel/PHPExcel.php');
//        $objPHPExcel = new \PHPExcel();
        $file = request()->file('file');
        $info = $file->validate(['size'=>52428800])->move( '../public/uploads');
        if($info){
            $ext = $info->getExtension(); //獲取檔案字尾名
            if(!in_array($ext,['xlsx','xls'])){
                $msg=['code'=>-1,'msg'=>"檔案格式有誤"];
            }else{
                $path = $_SERVER['DOCUMENT_ROOT'].'/uploads/'.str_replace('\\', '/', $info->getSaveName());   //上傳檔案路徑
                if (!file_exists($path)) {
                    $msg['res'] = -1;
                    $msg['msg'] = "上傳檔案丟失!" . $file->getError();
                }

                if ($ext == 'xlsx') {
                    $objReader = \PHPExcel_IOFactory::createReader('Excel2007');
                    $objPHPExcel = $objReader->load($path, 'utf-8');
                } elseif ($ext == 'xls') {
                    $objReader = \PHPExcel_IOFactory::createReader('Excel5');
                    $objPHPExcel = $objReader->load($path, 'utf-8');
                }

                $sheet = $objPHPExcel->getSheet(0);
                $highestRow = $sheet->getHighestRow(); // 取得總行數
//                $highestColumn = $sheet->getHighestColumn(); // 取得總列數
                $i = 0;
                $importRows = 0;
                $addData = [];
                for ($j = 2; $j <= $highestRow; $j++) {
                    $importRows++;
                    $realName = (string)$objPHPExcel->getActiveSheet()->getCell("A$j")->getValue();//需要匯入的realName
                    $phone = (string)$objPHPExcel->getActiveSheet()->getCell("B$j")->getValue();   //需要匯入的phone
                    $company = (string)$objPHPExcel->getActiveSheet()->getCell("C$j")->getValue(); //需要匯入的company
                    $job = (string)$objPHPExcel->getActiveSheet()->getCell("D$j")->getValue();     //需要匯入的job
                    $email = (string)$objPHPExcel->getActiveSheet()->getCell("E$j")->getValue();   //需要匯入的email

                    $addData[] = ['name'=>$realName,'tel'=>$phone,'company'=>$company,'job'=>$job,'email'=>$email];
                    $i++;
                }
                halt($addData);  //列印資料
                //資料寫入資料庫
                $result = model('')->insertAll($addData);
                if($result){
                    $msg = ['code'=>0,'msg'=>'匯入資料成功！'];
                }else{
                    $msg = ['code'=>-1,'msg'=>'匯入失敗，請重試！'];
                }
            }
        }
        return $msg;
    }
}

 配置路由：

'import'=>'admin/Upload/import',  

2.前端部分：layui傳檔案

<a class="layui-btn layui-btn-primary import_btn" data-type="import">匯入資料</a>   //點選開始上傳檔案操作

layui.use(['upload'],function(){
　　var upload = layui.upload;
　　upload.render({

    　　elem: '.import_btn'
    　　,url: "{:url('/admin/import')}"        
    　　,accept: 'file' //普通檔案
    　　,exts:'xls'     //檔案字尾
    　　,done: function(res){
          //執行匯入後操作
    　　}
　　});
})

參考連結：https://www.cnblogs.com/52lnamp/p/9237704.html，https://blog.csdn.net/xgs736214763/article/details/78904780（感謝分享）