[PHP知识库]laravel 导出（多维表头），插件 “maatwebsite/excel“: “^3.1“

<?php


namespace App\Api\Exports;

use Maatwebsite\Excel\Concerns\WithStyles;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;

class ExportMerge implements WithStyles
{


    protected $data = [];
    protected $z_count;
    protected $s_count;

    public function __construct($data, $z_count, $s_count)
    {
        $this->data = $data;
        $this->s_count = $s_count;
        $this->z_count = $z_count;
    }

    public function styles(Worksheet $sheet)   
    {
        $code = [
            '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'
        ];
        //设置表头
        $sheet->mergeCells('A1:A2'); //合并
        $sheet->mergeCells('B1:B2');
        $sheet->getCell('A1')->setValue($this->data[0][0]); //在合并的单元格设置值
        $sheet->getCell('B1')->setValue($this->data[0][1]);
        $sheet->mergeCells('C1:' . ($code[$this->s_count + 1]) . '1'); //第一个
        $sheet->mergeCells($code[$this->s_count + 2] . '1:' . $code[$this->s_count + $this->z_count + 1] . '1');//第二个
        $sheet->getCell('C1')->setValue("收入");
        $sheet->getCell($code[$this->s_count + 2] . '1')->setValue("支出");
        //后面3个
        $sheet->mergeCells($code[$this->s_count + $this->z_count + 2] . '1:' . $code[$this->s_count + $this->z_count + 2] . '2');
        $sheet->mergeCells($code[$this->s_count + $this->z_count + 3] . '1:' . $code[$this->s_count + $this->z_count + 3] . '2');
        $sheet->mergeCells($code[$this->s_count + $this->z_count + 4] . '1:' . $code[$this->s_count + $this->z_count + 4] . '2');

????????//设置数据体
        $jj = 3;
        foreach ($this->data as $key => $vo) {
            if ($key == 0) {
                $array_slice = array_slice($code, 0, $this->s_count + $this->z_count + 5);
                $ii = 0;
                foreach ($array_slice as $k => $v) {
                    if (in_array($v, array_slice($code, count($array_slice) - 3, 3))) {
                        $sheet->getCell($v . '1')->setValue($vo[$ii]);
                    } else {
                        $sheet->getCell($v . '2')->setValue($vo[$ii]);
                    }
                    $ii++;
                }
            } else {
                $array_slice = array_slice($code, 0, $this->s_count + $this->z_count + 5);
                $jj1 = 0;
                foreach ($vo as $kk => $vv) {
                    $sheet->getCell($array_slice[$jj1] . $jj)->setValue($vv);
                    $jj1++;
                }
                $jj++;
            }
        }
    }
}

//设置excel的值，其实就是在合并单元格后，找到合并后的单元格的新坐标设置值

$sheet->getCell('C1')->setValue("收入");