最簡單的thinkphp6導出Excel

<?php


namespace app\admin\controller;


use app\BaseController;

class Export extends BaseController
{
    public function download()
    {
        $enToCn = [
            'door_num' => '（原）門牌號',
            'name' => '客戶姓名',
            'id_card' => '身份證號',
            'phone' => '客戶電話',
            'type' => '用水戶類型',
            'waterworks' => '所屬水廠',
            'grid' => '所屬網格',
            'recorder' => '添加人員',
            'township' => '鄉鎮/區',
            'village' => '村庄',
            'site' => '水表位置（經緯度）',
            'ton' => '水表噸數',
            'address' => '詳細地址',
            'pay_num' => '繳費賬號',
            'check_text' => '審核狀態',
            'create_time' => '創建時間',
        ]; //此數組的順序就是Excel表格展示的順序 key對應的是數據庫字段名 value對應的是Excel的表頭 $cnToEn = array_flip($enToCn);
        $intToCn = array_keys($cnToEn);
        $intToEn = array_keys($enToCn);

        $time = input('time/s', '');
        $startTime = null;
        $endTime = null;
        if($time) {
            $startTime = explode(' - ', $time)[0];
            $endTime = explode(' - ', $time)[1];
        } //為防止一次性導出全表數據量過大而導出失敗，加上一個時間段的篩選 $data = \app\admin\model\Payform::order('id')
            ->append(['site','check_text'])
            ->where(function ($query) use ($startTime,$endTime){
                if ($startTime&&$endTime) {
                    $query->whereBetweenTime('create_time', $startTime, $endTime);
                }
            })
            ->select()
            ->toArray();
        $name = "用水戶信息統計表（導出）";
        $excel = new \PHPExcel();
        iconv('UTF-8', 'gb2312', $name); //針對中文名轉碼
        $excel->setActiveSheetIndex(0);
        $sheel = $excel->getActiveSheet();
        $sheel->setTitle($name); //設置表名
        $sheel->getDefaultRowDimension()->setRowHeight(14.25);//設置默認行高
        $sheel->getDefaultColumnDimension()->setWidth(18);//設置默認列寬
        $letterArr = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','AA','AB','AC','AD','AE','AF','AG','AH','AI','AJ','AK'];
        foreach ($intToEn as $k => $v) {
            $sheel->setCellValue($letterArr[$k] . 1, $enToCn[$v]);
        }
        // 寫入內容
        for($i=0; $i<count($data); $i++){
            $j = $i+2;
            foreach ($intToEn as $k => $v) {
                $sheel->setCellValue($letterArr[$k] . $j, $data[$i][$v]."\t");
            }
        }
        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename='.$name.'.xlsx');
        header('Cache-Control: max-age=0');
        $objWriter = \PHPExcel_IOFactory::createWriter($excel, 'Excel2007');

        $objWriter->save('php://output');
        exit;
    }
}

注意：需要安裝php生成excel擴展   composer require phpoffice/phpexcel

注意：Excel表頭用的數組$letterArr = ['A','B','C','D','E','F','G','H','I',....];可以使用下面方法生成

function excelHead($columns) {
    $array = [];
    $n = 0;
    for ($i = 'A'; $i <= 'Z'; $i++) {
        if ($n<$columns) array_push($array, $i);
        $n++;
    }
    return $array;
}