Как устранить эту ошибку «Неопределенный ключ массива «имя пользователя»»? [дубликат] ⇐ Php

[Anonymous]

I'm a beginner programer and i'm working on my first personal project, and the first step is creating a signup form that stores data in a MySQL database (i'm using XAMPP). i successfuly connected to the database, but it keeps spitting out this error for me:

PHP Warning: Undefined array key "username"

And this is my PHP code:



Источник: https://stackoverflow.com/questions/781 ... name-error