PHP如何输出合并单元格的表

/**
     * Display a listing of the Allot.
     *
     * @param Request $request
     * @return Response
     */
    public function index(Request $request)
    {
        $param  = $request->all();
        $params  = [
            'orderBy' => ['allot_id', 'desc'],
            'groupBy' => 'allot_sn'
        ];


        $params['left_join'][] = ['allot_detail','allot.allot_id','=','allot_detail.allot_id'];
        $params['left_join'][] = ['goods_sku','allot_detail.sku_id','=','goods_sku.sku_id'];
        $params['left_join'][] = ['goods','goods_sku.goods_id','=','goods.goods_id'];

        $params['select']   = [
            'allot.*',
            'allot_detail.sku_id',
            'goods_sku.sku_id',
            'goods_sku.goods_id',
            'goods.goods_id',
            'goods.goods_name'
        ];

        if(!empty($param['goods_name'])){
            $params['where'] = $this->entryWareRepository->getLikeGoods(trim($param['goods_name']));
            $search_sku_id = $this->entryWareRepository->getLikeSkuID(trim($param['goods_name']));
        }

        //用户所属对应仓库的信息
        $admin_ware = $this->allotRepository->getAdminWare();
        if($admin_ware > 0){
            $params['whereIn'] = ['allot.from_ware_id', $admin_ware];
        }

        $this->allotRepository->pushCriteria(new RequestCriteria($request));
        $allots = $this->allotRepository->paginate(config('config.pagesize'),[
            'detail.sku.goods','out_ware','entry_ware'
        ],$params);

        $allots->each(function($item,$key){
            $item->is_out_ware = count($this->allotRepository->out_ware($item->allot_sn));
            $item->is_entry_ware = count($this->allotRepository->entry_ware($item->allot_sn));
        });

        foreach ($allots as $val){
            $val->detail->each(function($vo,$k){
                $vo->change_sku = $vo->sku->getShowSku();
            });
        }
        //dd($allots);

        return view('admin.allots.index', compact('allots','admin_ware','param'));

    }

class Allot extends Model
{

    public $table = 'allot';

    const CREATED_AT = 'created_at';
    const UPDATED_AT = 'updated_at';


    protected $primaryKey = 'allot_id';

    public $fillable = [
        'allot_sn',
        'remark',
        'status',
        'from_ware_id',
        'to_ware_id',
        'create_admin_id',
        'create_admin_name',
        'examine_admin_id',
        'examine_admin_name',
        'entry_ware_status',
        'out_ware_status',
        'confirm_admin_id',
        'confirm_admin_name'
    ];

    /**
     * The attributes that should be casted to native types.
     *
     * @var array
     */
    protected $casts = [
        'allot_id' => 'integer',
        'allot_sn' => 'string',
        'remark' => 'string',
        'status' => 'integer',
        'from_ware_id' => 'integer',
        'to_ware_id' => 'integer',
        'create_admin_id' => 'integer',
        'create_admin_name' => 'string',
        'examine_admin_id' => 'integer',
        'examine_admin_name' => 'string',
        'confirm_admin_id' => 'integer',
        'confirm_admin_name' => 'string',
        'entry_ware_status' =>'integer',
        'out_ware_status' => 'integer',
    ];

    /**
     * Validation rules
     *
     * @var array
     */
    public static $rules = [

    ];

<?php

namespace App\Repository;

use App\Model\Allot;
use App\Model\AllotDetail;
use App\Model\AllotSkuBatch;
use App\Repository\CommonRepository;


class AllotRepository extends CommonRepository
{
    /**
     * @var array
     */
    protected $fieldSearchable = [
        'allot_id',
    ];

    /**
     * Configure the Model
     **/
    public function model()
    {
        return Allot::class;
    }

    public function search($param = [])
    {

        $model = $this->model();
        $model = new $model;

        $rs = $model;
        if (!empty($param['goods_name'])) {
            $rs = $model->where('goods_name', '=', $param['goods_name']);
        }

        //创建时间开始
        if (!empty($param['add_time_start'])) {
            $rs = $rs->where('created_at', '>=', $param['created_at'] . ' 00:00:00');
        }
        //创建时间结束
        if (!empty($param['add_time_end'])) {
            $rs = $rs->where('created_at', '<=', $param['created_at'] . ' 23:59:59');
        }

        return $rs;
    }

    /**
     * Function:自动生成入单号
     * User:wucy
     * @return string
     */
    public function createAllotSn()
    {
        $model = $this->model();
        $allot_id = $model::max('allot_id');
        $date = date('Ymd',time());
        $allot_id = $allot_id +1;
        $allot_sn = 'A' .$date. str_repeat('0', 8 - strlen($allot_id)) . $allot_id;
        $sn_list = $model::where('allot_sn','like','%'.$allot_id.'%')->where('allot_id','<>',$allot_id)->get()->toArray();
        if (in_array($allot_sn, $sn_list))
        {
            $max = pow(10, strlen($sn_list[0]) - strlen($allot_sn) + 1) - 1;
            $new_sn = $allot_sn . mt_rand(0, $max);
            while (in_array($new_sn, $sn_list))
            {
                $new_sn = $allot_sn . mt_rand(0, $max);
            }
            $allot_sn = $new_sn;
        }

        return $allot_sn;
    }

<div class="box" style="overflow-x:scroll;">
    <div class="box-body">
        <table class="table table-bordered table-hover lastTd" id="allots-table" style="font-size:12px;">
            <thead>
                <tr class="nowrap">
                    <th>调拨单号</th>
                    <th>制单时间</th>
                    <th>调出仓库</th>

                    <th>商品SKU</th>
                    <th>商品名称</th>
                    <th>商品属性</th>
                    <th>单位</th>
                    <th>调拨数量</th>

                    <th>调入仓库</th>
                    <th>调拨备注</th>
                    <th>审核状态</th>
                    <th>审核人</th>
                    <th>是否出库</th>
                    <th>是否入库</th>
                    <th style="width:135px;min-width:135px;">操作</th>
                </tr>
            </thead>
            <tbody>
            @foreach($allots as $allot)
                <?php
                    if(isset($param['goods_name']) && !empty($param['goods_name'])){
                        $detail = $allot->detail->whereInLoose('sku_id',$search_sku_id);
                    }else{
                        $detail = $allot->detail;
                    }

                    $count = count($detail);
                    $rowspan = $count == 1 ? '' : "rowspan='{
   $count}'";   //单元格合并
                    $first_detail = $detail->shift();

                    $admin_id = Auth::id();

                    if(($admin_ware > 0 && in_array( $allot->from_ware_id,$admin_ware))
                        || $admin_ware==0){
                         $from_admin_ware =1;
                    }else{
                         $from_admin_ware =0;
                    }

                    if(($admin_ware > 0 && in_array( $allot->to_ware_id,$admin_ware))
                    || $admin_ware==0){
                        $to_admin_ware =1;
                    }else{
                        $to_admin_ware =0;
                    }

                    //dd($from_admin_ware);

                ?>
                <tr>
                    <td {!! $rowspan !!}>{!! $allot->allot_sn !!}</td>
                    <td {!! $rowspan !!}>{!! $allot->created_at !!}</td>
                    <td {!! $rowspan !!}>{!! $allot['out_ware']['name'] !!}</td>

                    <td>{!! !empty($first_detail) ? $first_detail->change_sku : '--' !!}</td>
                    <td>{!! !empty($first_detail) ? $first_detail->sku->goods->goods_name : '--' !!}</td>
                    <td>{!! !empty($first_detail) ? $first_detail->sku->value_name : '--' !!}</td>
                    <td>{!! !empty($first_detail) ? $first_detail->sku->goods->goods_unit : '--' !!}</td>
                    <td>{!! !empty($first_detail) ? $first_detail->send_number : '--' !!}</td>

                    <td {!! $rowspan !!}>{!! $allot['entry_ware']['name'] !!}</td>
                    <td {!! $rowspan !!}>{!! $allot->remark !!}</td>
                    <td {!! $rowspan !!}>
                        <small class="label pull-left bg-blue">{!! config('const.ware.entry_status')[$allot->status] !!}</small>
                    </td>
                    <td {!! $rowspan !!}>{!! $allot->confirm_admin_name ? $allot->confirm_admin_name : '--'!!}</td>
                    <td {!! $rowspan !!}>{!! config('const.ware.entry_or_out_ware')[$allot->out_ware_status] !!}</td>
                    <td {!! $rowspan !!}>{!! config('const.ware.entry_or_out_ware')[$allot->entry_ware_status] !!}</td>
                    <td {!! $rowspan !!}>
                        {
    !! Form::open(['route' => ['admin.allots.destroy', $allot->getKey()], 'method' => 'delete']) !!}
                        <div class='btn-group'>
                            <a href="@if($allot->status==1) javascript:; @else {!! route('admin.allots.edit', [$allot->getKey()]) !!} @endif"
                               class='btn btn-default btn-xs' @if($allot->status==1) disabled="disabled" @endif title="编辑" alt="编辑"><i class="fa fa-edit"></i></a>
                            <a href="@if($allot->status==1) javascript:; @else{!! route('admin.allots.examine', [$allot->getKey()]) !!} @endif"
                               class='btn btn-default btn-xs' @if($allot->status==1) disabled="disabled" @endif title="审核" alt="审核"><i class="fa fa-user"></i></a>

                            <a href="@if($allot->is_out_ware == 1 || $from_admin_ware ==0)javascript:; @else {!! route('admin.allots.out_ware', [$allot->getKey()]) !!} @endif"
                               class='btn btn-default btn-xs' @if($allot->is_out_ware==1 ||$allot->status==0 || $from_admin_ware ==0) disabled="disabled" @endif title="办理出库" alt="办理出库"><i class="fa fa-share"></i></a>

                            <a href="@if($allot->entry_ware_status == 1 || $allot->out_ware_status==0 || $allot->is_entry_ware==1 || $to_admin_ware == 0) javascript:; @else {!! route('admin.allots.entry_ware', [$allot->getKey()]) !!} @endif"
                               class='btn btn-default btn-xs' @if($allot->entry_ware_status==1 || $allot->out_ware_status==0 ||$allot->is_entry_ware==1 || $to_admin_ware == 0) disabled="disabled" @endif title="办理入库" alt="办理入库"><i class="fa fa-reply"></i></a>

                            <a @if($allot->status > 0) disabled="disabled" @endif href="{!! route('admin.allots.destroy', [$allot->getKey()]) !!}" title="删除" alt="删除" class='btn btn-default btn-xs'><i class="fa fa-trash"></i></a>
                        </div>
                        {
    !! Form::close() !!}
                    </td>
                </tr>

                @if($rowspan != '')
                    @foreach($detail as $row)
                <tr>
                    <td>{
   { $row->change_sku }}</td>
                    <td>{
   { $row->sku->goods->goods_name }}</td>
                    <td>{
   { $row->sku->value_name }}</td>
                    <td>{
   { $row->sku->goods->goods_unit }}</td>
                    <td>{
   { $row->send_number }}</td>
                </tr>
                    @endforeach
                @endif
            @endforeach
            </tbody>
        </table>
    </div>
</div>