Php 在视图中正确显示数组的内容

我有一个PaymentController，它获取一个数组并将该数组“selectedTypes”返回到registration.blade.php：

class PaymentController extends Controller
{
    public function storeQuantity(Request $request){
        $selectedTypes = $request->type;
        return view('posts.registration')->with('selectedTypes', $selectedTtypes);
    }
}

现在，在registration.blade.php文件中，我想显示票据类型名称和所选数量，但它不能正常工作。代码是：

<div class="card_body">
    <ul class="list-group list-group-flush">
        <li>
            <span>Ticket Type</span>
            <span>Quantity</span>
        </li>
        <?php var_dump($selectedTypes); ?>

        @foreach($selectedTypes as $selectedType)
            <li class="list-group-item list-group-registration d-flex align-items-center justify-content-between">
                <span class="font-size-sm">{{$selectedType[0]}}</span>
                <span class="font-size-sm">{{$selectedType[1]}}</span>
            </li>
        @endforeach
    </ul>
</div>

---

您正在访问的阵列不正确$selectedType不是数组。所以，当您像这样访问$selectedType[0]时，它会得到字符串的第一个字符，这意味着它是2

试试这个：

<div class="card_body">
    <ul class="list-group list-group-flush">
        <li>
            <span>Ticket Type</span>
            <span>Quantity</span>
        </li>
        <?php var_dump($selectedTypes); ?>

        @foreach($selectedTypes as $k=>$selectedType)
            <li class="list-group-item list-group-registration d-flex align-items-center justify-content-between">
                <span class="font-size-sm">{{$k}}</span>
                <span class="font-size-sm">{{$selectedType}}</span>
            </li>
        @endforeach
    </ul>
</div>

票型
量

@foreach（$k=>$selectedType的选定类型）

{{$k}
{{$selectedType}

@endforeach

为什么要在单个foreach循环中添加{{$selectedType[0]}&{{$selectedType[1]}}？您不需要只保留单个selectedType吗？谢谢，但结果与“{{$selectedType[0]}”相同。谢谢，现在票证名称出现了，但数量没有出现。它显示为“未初始化字符串偏移量：1”。哦，很抱歉我忘记了，再次检查我已将$selectedType[1]替换为$selectedType

 <div class="card_body">
    <ul class="list-group list-group-flush">
        <li>
            <span>Ticket Type</span>
            <span>Quantity</span>
        </li>
            <li>
                <span class="font-size-sm">Center Bench</span>
                <span class="font-size-sm">2</span>
            </li>
             <li>
                <span class="font-size-sm">Lateral Bench</span>
                <span class="font-size-sm">2</span>
            </li>
    </ul>
</div>

array(3) { ["a"]=> string(1) "2" ["center bench"]=> string(1) "2" ["lateral bench"]=> NULL }

<div class="card_body">
    <ul class="list-group list-group-flush">
        <li>
            <span>Ticket Type</span>
            <span>Quantity</span>
        </li>
        <?php var_dump($selectedTypes); ?>

        @foreach($selectedTypes as $k=>$selectedType)
            <li class="list-group-item list-group-registration d-flex align-items-center justify-content-between">
                <span class="font-size-sm">{{$k}}</span>
                <span class="font-size-sm">{{$selectedType}}</span>
            </li>
        @endforeach
    </ul>
</div>