Php 如何在foreach的数组中使用foreach？

我试图将数据插入json中的数据库，其中multiple select具有多个选项标签和值。我只想像这样插入数据库：-

First select dropdown:-

 {"select":[{"placeholder":"test","options":
 [{"label":"option-label-1","value":"option-value-1"},
  {"label":"option-label-2","value":"option-value-2"},
  {"label":"option-label-3","value":"option-value-3"},
  {"label":"option-label-4","value":"option-value-4"}],
 "type":"select","name":"test","label":"test"},

Second select dropdown:-

{"placeholder":"test2","options":
[{"label":"option-label-1","value":"option-value-1"},
 {"label":"option-label-2","value":"option-value-2"},
 {"label":"option-label-3","value":"option-value-3"},
 {"label":"option-label-4","value":"option-value-4"}],
 "type":"select","name":"test2","label":"test2"}]}

但是我的代码在插入时显示错误

 Parse error: syntax error, unexpected 'foreach' (T_FOREACH), expecting ']'

我得到结果的代码是

publicfunction dropDownField($request)
{
    $value = [];
    if (key_exists("drop-name", $request)) {
        foreach ($request['drop-name'] as $key => $data) {
            $value[] = [
                "type"        => ($request['drop-type'][$key]) ? (($request['drop-type'][$key])) : null,
                "label"       => ($request['drop-label'][$key]) ? ($request['drop-label'][$key]) : null,
                "name"        => ($request['drop-name'][$key]) ? ($request['drop-name'][$key]) : null,
                "placeholder" => ($request['drop-placeholder'][$key]) ? ($request['drop-placeholder'][$key]) : null,
                  foreach ($request['drop-option-label'] as $index => $data) {
                      "options"     => [
                          'label' => ($request['drop-option-label'][$key][$index]) ? ($request['drop-option-label'][$key][$index]) : null,
                          'value' => ($request['drop-option-value'][$key][$index]) ? ($request['drop-option-value'][$key][$index]) : null,
                      ]
                    }
            ];
        }
    }

    return $value;
}

---

它可以是这样的：

public function dropDownField($request)
{
    $value = [];

    if (key_exists("drop-name", $request)) {
        foreach ($request['drop-name'] as $key => $data) {

        /* Defined $var here for option */
         foreach ($request['drop-option-label'] as $index => $data) {
            $var = [
              'label' => !empty($request['drop-option-label'][$index]) ? $request['drop-option-label'][$index] : null,
              'value' => !empty($request['drop-option-value'][$index]) ? $request['drop-option-value'][$index] : null,
                ];
        }


    $value[] = [
                "type"        => !empty($request['drop-type'][$key]) ? $request['drop-type'][$key] : null,
                "label"       => !empty($request['drop-label'][$key]) ? $request['drop-label'][$key] : null,
                "name"        => !empty($request['drop-name'][$key]) ? $request['drop-name'][$key] : null,
                "placeholder" => !empty($request['drop-placeholder'][$key]) ? $request['drop-placeholder'][$key] : null,
                "options"     => $var; //Defined outside foreach loop
            ];
        }
    }

    return $value;
}

---

它可以是这样的：

public function dropDownField($request)
{
    $value = [];

    if (key_exists("drop-name", $request)) {
        foreach ($request['drop-name'] as $key => $data) {

        /* Defined $var here for option */
         foreach ($request['drop-option-label'] as $index => $data) {
            $var = [
              'label' => !empty($request['drop-option-label'][$index]) ? $request['drop-option-label'][$index] : null,
              'value' => !empty($request['drop-option-value'][$index]) ? $request['drop-option-value'][$index] : null,
                ];
        }


    $value[] = [
                "type"        => !empty($request['drop-type'][$key]) ? $request['drop-type'][$key] : null,
                "label"       => !empty($request['drop-label'][$key]) ? $request['drop-label'][$key] : null,
                "name"        => !empty($request['drop-name'][$key]) ? $request['drop-name'][$key] : null,
                "placeholder" => !empty($request['drop-placeholder'][$key]) ? $request['drop-placeholder'][$key] : null,
                "options"     => $var; //Defined outside foreach loop
            ];
        }
    }

    return $value;
}

---

您只需在循环中创建另一个数组，然后根据需要将其添加到原始数组中：

publicfunction dropDownField($request)
{
    $value = [];
    if (key_exists("drop-name", $request)) {
        foreach ($request['drop-name'] as $key => $data) {

            // new "options" array
            $options = [];
            foreach($request['drop-option-label'] as $index => $data) {
                $options[] = [
                    'label' => $data ?: null,
                    'value' => !empty($request['drop-option-value'][$index]) ? $request['drop-option-value'][$index] : null,
                ];
            }

            // original "return" array
            $value[] = [
                "type"        => !empty($request['drop-type'][$key]) ? $request['drop-type'][$key] : null,
                "label"       => !empty($request['drop-label'][$key]) ? $request['drop-label'][$key] : null,
                "name"        => !empty($request['drop-name'][$key]) ? $request['drop-name'][$key] : null,
                "placeholder" => !empty($request['drop-placeholder'][$key]) ? $request['drop-placeholder'][$key] : null,
                "options"     => $options // <-- new "options" array added here
            ];
        }
    }

    return $value;
}

publicfunction下拉字段（$request）
{
$value=[]；
如果（key_存在（“drop name”，$request））{
foreach（$request['drop-name']作为$key=>$data）{
//新的“选项”数组
$options=[]；
foreach（$request['drop-option-label']作为$index=>$data）{
$options[]=[
'label'=>$data？：空，
'value'=>！空（$request['drop-option-value'][$index]）？$request['drop-option-value'][$index]：null，
];
}
//原始“返回”数组
$value[]=[
“type”=>！empty（$request['drop-type'][$key]）？$request['drop-type'][$key]：null，
“label”=>！空（$request['drop-label'][$key]）？$request['drop-label'][$key]：null，
“name”=>！空（$request['drop-name'][$key]）？$request['drop-name'][$key]：null，
“占位符”=>！空（$request['drop-placeholder'][$key]）？$request['drop-placeholder'][$key]：null，
“options”=>$options/您只需在循环中创建另一个数组，然后在需要时将其添加到原始数组中：

publicfunction dropDownField($request)
{
    $value = [];
    if (key_exists("drop-name", $request)) {
        foreach ($request['drop-name'] as $key => $data) {

            // new "options" array
            $options = [];
            foreach($request['drop-option-label'] as $index => $data) {
                $options[] = [
                    'label' => $data ?: null,
                    'value' => !empty($request['drop-option-value'][$index]) ? $request['drop-option-value'][$index] : null,
                ];
            }

            // original "return" array
            $value[] = [
                "type"        => !empty($request['drop-type'][$key]) ? $request['drop-type'][$key] : null,
                "label"       => !empty($request['drop-label'][$key]) ? $request['drop-label'][$key] : null,
                "name"        => !empty($request['drop-name'][$key]) ? $request['drop-name'][$key] : null,
                "placeholder" => !empty($request['drop-placeholder'][$key]) ? $request['drop-placeholder'][$key] : null,
                "options"     => $options // <-- new "options" array added here
            ];
        }
    }

    return $value;
}

publicfunction下拉字段（$request）
{
$value=[]；
如果（key_存在（“drop name”，$request））{
foreach（$request['drop-name']作为$key=>$data）{
//新的“选项”数组
$options=[]；
foreach（$request['drop-option-label']作为$index=>$data）{
$options[]=[
'label'=>$data？：空，
'value'=>！空（$request['drop-option-value'][$index]）？$request['drop-option-value'][$index]：null，
];
}
//原始“返回”数组
$value[]=[
“type”=>！empty（$request['drop-type'][$key]）？$request['drop-type'][$key]：null，
“label”=>！空（$request['drop-label'][$key]）？$request['drop-label'][$key]：null，
“name”=>！空（$request['drop-name'][$key]）？$request['drop-name'][$key]：null，
“占位符”=>！空（$request['drop-placeholder'][$key]）？$request['drop-placeholder'][$key]：null，
“options”=>$options/请尝试以下代码：

public function dropDownField($request)
{
    $value = [];
    if (key_exists("drop-name", $request)) {
        foreach ($request['drop-name'] as $key => $data) {
            $options = [];
            foreach($request['drop-option-label'] as $key => $data) {
                $options[] = [
                    'label' => ($request['drop-option-label'][$key]) ?($request['drop-option-label'][$key]) : null,
                    'value' => ($request['drop-option-value'][$key]) ? ($request['drop-option-value'][$key]) : null,
                ];
            }

           $value[] = [
                "type"        => ($request['drop-type'][$key]) ? (($request['drop-type'][$key])) : null,
                "label"       => ($request['drop-label'][$key]) ? ($request['drop-label'][$key]) : null,
                "name"        => ($request['drop-name'][$key]) ? ($request['drop-name'][$key]) : null,
                "placeholder" => ($request['drop-placeholder'][$key]) ? ($request['drop-placeholder'][$key]) : null,
                "options" => $options
            ];
        }
    }
    return $value;
}

请尝试以下代码：

public function dropDownField($request)
{
    $value = [];
    if (key_exists("drop-name", $request)) {
        foreach ($request['drop-name'] as $key => $data) {
            $options = [];
            foreach($request['drop-option-label'] as $key => $data) {
                $options[] = [
                    'label' => ($request['drop-option-label'][$key]) ?($request['drop-option-label'][$key]) : null,
                    'value' => ($request['drop-option-value'][$key]) ? ($request['drop-option-value'][$key]) : null,
                ];
            }

           $value[] = [
                "type"        => ($request['drop-type'][$key]) ? (($request['drop-type'][$key])) : null,
                "label"       => ($request['drop-label'][$key]) ? ($request['drop-label'][$key]) : null,
                "name"        => ($request['drop-name'][$key]) ? ($request['drop-name'][$key]) : null,
                "placeholder" => ($request['drop-placeholder'][$key]) ? ($request['drop-placeholder'][$key]) : null,
                "options" => $options
            ];
        }
    }
    return $value;
}

你不能使用
foreach
inside
array
好的，我的问题是因为foreach inside array。那么，我如何实现foreach inside array。无论如何，要做到这一点。使用
foreach
生成第二个数组，然后将其放入你想要的第一个数组中。谢谢你的想法。但是我怎么做呢？你不能使用
foreach
inside
array
好的，我的问题是因为foreach inside array。那么，我如何实现foreach inside array。无论如何都要这样做。使用
foreach
生成第二个数组，然后将其放入第一个数组中。谢谢你的想法。但是我怎么做呢？谢谢你的回答。但仍然有问题。@PawanDongol…你能说得更具体一点吗？好的，我的问题显示此行“label”=>（$request['drop-option-label'][$key][$index]）中未定义索引偏移量0的错误（$request['drop-option-label'][$key][$index]）：Null谢谢你的回答。但它仍然有问题。@PawanDongol…你能说得更具体一点吗？好的，我的问题显示错误在这行“label”=>（$request['drop-option-label'][$key][$index]）？（$request['drop-option-label'][$key][$index]）：nullThank@Shaunak这行显示未定义索引$request['drop-option-label'][$key][$index]我们需要依次添加
！empty
来检查值。Thank@Shaunak这行显示未定义索引$request['drop-option-label'][$key][$index]我们需要在turnary中添加
！empty
，以检查值。感谢您的回答@rya。我将在此处尝试，
$key
被覆盖！！虽然您是很棒的rya，但多数组索引的捕捉效果很好！感谢您的回答@rya。我将在此处尝试，
$key
被覆盖！！尽管您是很棒的rya，但多数组索引的捕捉效果很好！