Laravel keeps giving me: "Undefined offset 2"

Question

I try foreach loop but it keeps giving me "Undefined offset 2".

I tried also isset then I got "Undefined offset 1"

My code:

foreach ($lineArrayResults as $lineArrayResultKey => $lineArrayResult)
{
    $currentFormFieldId = $submittedFormFields[$lineArrayResultKey]; // this line gives me error.
    if($currentFormFieldId > 0)
    {
        $newLeadDataArray[$currentFormFieldId] = [
            'field_name' => $formFields[$currentFormFieldId],
            'field_value' => $lineArrayResult
        ];
    }
}

undefined offset means that an array have ran out of bounds. the array size is smaller than the index that you are trying to fetch an object from. — Mahabubul Hasan, Apr 18 '20 at 23:34

Mahabubul Hasan · Answer 1 · 2020-04-18T23:45:27.830

the error undefined offset means that an array have ran out of bounds. the array size is smaller than the index that you are trying to fetch an object from.

First of all make sure your $submittedFormFields array contains the key of $lineArrayResultKey variable, if the array key is dynamically generated then try this code

foreach ($lineArrayResults as $lineArrayResultKey => $lineArrayResult)
{
    if(!array_key_exists($lineArrayResultKey, $submittedFormFields)){
        continue;
    }

    $currentFormFieldId = $submittedFormFields[$lineArrayResultKey];
    if($currentFormFieldId > 0)
    {
        $newLeadDataArray[$currentFormFieldId] = [
            'field_name' => $formFields[$currentFormFieldId],
            'field_value' => $lineArrayResult
        ];
    }
}

score 0 · Answer 2 · answered Apr 18 '20 at 23:40

0

add @ before $ try this

foreach ($lineArrayResults as $lineArrayResultKey => $lineArrayResult)
{
    $currentFormFieldId = @$submittedFormFields[$lineArrayResultKey]; // insert @ before $
    if($currentFormFieldId > 0)
    {
        $newLeadDataArray[$currentFormFieldId] = [
            'field_name' => $formFields[$currentFormFieldId],
            'field_value' => $lineArrayResult
        ];
    }
}

answered Apr 18 '20 at 23:40

Hossein Piri

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Terrible solution. Operator @ is only for testing purposes and exceptions, not using in production. – Jsowa Apr 19 '20 at 05:48
Because it masks the problem, not solve it. https://stackoverflow.com/questions/1032161/what-is-the-use-of-the-symbol-in-php – Jsowa Apr 19 '20 at 16:06

Laravel keeps giving me: "Undefined offset 2"

2 Answers2