未定义的偏移量甚至将 foreach 循环提交到数据库

Posted 2023-03-14

【中文标题】未定义的偏移量甚至将 foreach 循环提交到数据库

【英文标题】：Undefined offset even submitting foreach loop into database

【发布时间】：2020-05-08 15:59:04

【问题描述】：

在我看来，我有以下 foreach 正在尝试提交并存储到我的数据库中。没有任何运气。当我尝试提交时，它返回错误Undefined offset: 70。

这是控制器代码：

foreach ($request->useridweek1 as $key => $value)

      /*  $str_explode = explode("|",$value);
       $numb = $str_explode[1]; */

       $answer = new Retirement();
       $answer->user_id = $value;
       $answer->amount =  $request->amountweek1[$key];;



       $answer-> save();


  

这是我的带有 foreach 循环的视图文件：

@foreach ($request as $item)
    <tbody>
        <tr>
            <td class="idweek1">
                <input type="text" id="userid" name="userid" class="form-control" value=" $item->user_id">
            </td>
            <td>
                <input type="text" id="marketers" name="marketers[]" class="form-control" value=" $item->marketer">
            </td>
            <td>
                <input type="text" id="amount" name="amount[]" class="form-control" value=" $item->target * $item->AmountPbag * $fwek1) - ($item->sales->sum('sales') * $item->AmountPbag  ">
            </td>
            <td>
                <input type="text" id="mar1id" class="form-control" value=" $item->target * $item->AmountPbag * $fwek1 - $item->sales->sum('sales') * $item->AmountPbag ">
            </td> 
        </tr>
    </tbody>
@endforeach


When i dump dd($request->useridweek1);, i get

array:3 [▼
  70 => "70"
  72 => "72"
  73 => "73"
]


When i dump . dd($request->amount);
array:3 [▼
  0 => "14000"
  1 => "9450"
  2 => "8400"
]

【问题讨论】：

转储$request->amount和$request->userid的内容并检查它们是否包含相同数量的密钥。

你试过什么来调试这个问题？哪一行会发出该警告？

是的，我已经转储了这些值，它们都返回了它们的值@KFoobar

$answer->amount = $ammt[$key];这是抛出错误@NicoHaase

的行

您尝试发现什么错误？ $ammt 包含什么？

【参考方案1】：

我能够使用下面的代码解决它...以防有人遇到同样的问题...使用 foreach 中的键并将 [] 添加到我刀片上的输入名称中

 foreach ($request->amountweek1 as $key => $value)

               $str_explode = explode("|",$value);
               $numb = $str_explode; 





               $answer = new Retirement();
            $answer->marketer = $request->marketers[$key];
               $answer->amount =  $value;
               $answer->user_id = $request->useridweek1[$key];
               $answer->week = $request->week1;



               $answer-> save();