How to Fix Undefined Array Key Warning in PHP - How do I fix undefined array key in php?

In this video, I will show you how to get rid of the undefined array key in PHP or the undefined index

#php #tutorial #solution

[jean-francoisjutras]

Thank you sir, the annoying arrays are gone (newbie speaking). It takes a few times to get it. So cheer to your clear video!

[kingtyphoon]

Thanks for this video, I was struggling with this error for a while and I followed everything you did and now it's solved!

[jorgemorotti]

muito obrigado amigo, estou realizando o meu trabalho de conclusão de curso, seu video me ajudou muuito. Um abraço do Brasil.

[simsdiver]

THANK YOU SIR! You saved me spending hours trying to fix this massive brainfart parsing through scores of lines in php script!

[NEJUMUDHEENN]

A big Thank you Brother. Straight from India. Hugs. 💌💌💌

[CarlosMartinez-yygo]

God Bless you and brighten your mind to help others. Good Job!

[ExhibitedPeak]

Simple and straight to the point, thanks!

[TooN_AC]

Thank you so much. Instant solution, without eating times 🔥.. I don't know English properly but I understand what you did. Its solved my first php form problem. Thank you again. I always lean from 'Code with Harry '. But you are insane.

[codebykeoma]

This was helpful, since I was lost. Thanks a million!

[clementemartinez]

Your video was really helpful, thank you.

[-CA-Sowbarnika-innu]

God bless you dude ! ThankYou so much ❤️

[MultiUser]

Thanks. Very helpfull. I fix this error.

[ritabratagoswami]

I'm passing my id (auto_incre) through JavaScript like this:-
function showFunc(id)
{
let formData = new FormData();
formData.append("file_id_show", id);
var xmlObj = new XMLHttpRequest();
xmlObj.open("POST", "get_image.php");
xmlObj.send(formData);
// alert("The Show id is:- " + id);
}
i tested alert box it properly working showing respective id . But when it is going to other php page like this:-
$display_id = $_POST['file_id_show'];
it showing Undefined array key "file_id_show".
Any solution?
Remember all the thing is happening through JS.

[hotwings]

Hi. I am having an issue, stil learning php. I have two checkboxes right, i used foreach to echo the variables. but if i do not pick one how do i display a message without triggering that undefined key error? Thanks

[emilyvaiz]

Hello, I am getting an undefined array key message for my wp_widget_factory method in my functions.php file. I am not sure how to make an isset if loop for that.

[zoevdboogaert]

whenever I do this I keep getting "Parse error: syntax error, unexpected token ";" in on line 3" what can I do now?? Pls help

[gonefishing]

Thank you sir. I originally had a if (isset($_POST['submit'])){ which was great for the button but those errors stopped the rebuild of my project in it's tracks....

[LuisSuarez-ifmo]

gracias no sabes de la que me has salvado amigo

[shiaze]

why does this happen?? it doesn't make senseeee

[serogapeterson]

So wtf is this then? Why this shit happens?