I have a form where when the user clicks submit, I need a php file to be ran. below is the form and the php file.
There are a few things wrong with your code.
You're mixing GET with POST methods. Plus, add values to your inputs and your submit button isn't named, which you're trying to use as a conditional statement for.
HTML
PHP
Sidenote: You could/should also check against empty values.
if(isset($_POST['submit'])
&& !empty($_POST['feature'])
&& !empty($_POST['feature2']) ) {...}
Footnotes:
Seeing that you're intending on sending to DB:
I hope you plan on using mysqli with prepared statements, or PDO with prepared statements.