PHP Sign-up Form Not Working

I am building this PHP login system to work on my skills. When the user signs up and their information is secured in the SQL database, I want to display signup.php?signup=success o

Solution 1:

Simply change:

<input type="password" name="password" placeholder="password">

To:

<input type="password" name="pwd" placeholder="password">

Because in your php, you are using index pwd not password while from your html you are sending password not pwd