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[Fixed] Warning: Undefined array key

Today We are Going To Solve Warning: Undefined array key in Php. Here we will Discuss All Possible Solutions and How this error Occurs So let’s get started with this Article.

How to Fix Warning: Undefined array key Error?

  1. How to Fix Warning: Undefined array key Error?

    To Fix Warning: Undefined array key Error just use isset. Here you can use isset and your error will be removed. {{ isset($array['key']) ? $array['key']: 'Default' }}

  2. Warning: Undefined array key

    To Fix Warning: Undefined array key Error just Use these code. First of all, just define defaults for an undefined key. $data = array_merge(array($key=>false),$data); return $data[$key]; And after it you can check for undefined key. return isset($data[$key]) ? $data[$key] : false; By using these codes you can solve your problem. So try this solution.

Solution 1 : use isset

Here you can use isset and your error will be removed.

{{ isset($array['key']) ? $array['key']: 'Default' }} 

Solution 2 : Use these code

First of all, just define defaults for an undefined key.

$data = array_merge(array($key=>false),$data);
return $data[$key];

And after it you can check for undefined key.

return isset($data[$key]) ? $data[$key] : false;

By using these codes you can solve your problem. So try this solution.

Conclusion

So these were all possible solutions to this error. I hope your error has been solved by this article. In the comments, tell us which solution worked? If you liked our article, please share it on your social media and comment on your suggestions. Thank you.

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