PHP PHP Basics Unit Converter Integers

I follow along with the video but keep getting this message of undefined variable when I run the script

how do I correct the undefined variable message>

1 Answer

Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 87,171 Points

It could be that there's a simple spelling error between variable declaration and when you're referencing the variable. Make sure they both match and that should fix the problem with undefined variables.