xampp working?

I tried to replicate the contact form submission following the lesson in the beginner PHP lesson. I have a form with three text inputs. The method is post. Name, email and phone are the matching names in the 3 text inputs. The code in the submission page I've got is:

<?php
    $name = $_POST["name"];
    $email = $_POST["email"];
    $phone = $_POST["phone"];

    echo $name;
    echo $email;
    echo $phone;
?>  

However, when I submit the form I'm getting these notices that I can't seem to get rid of.

Notice: Undefined index: name in C:\XamppProgram\htdocs\inquirysubmit.php on line 2

Notice: Undefined index: email in C:\XamppProgram\htdocs\inquirysubmit.php on line 3

Notice: Undefined index: phone in C:\XamppProgram\htdocs\inquirysubmit.php on line 4

I also tried running a var_dump($POST); to pull the information from the form and I get an empty array. array(0) { } I would expect to see all the info without white space.

Is Xampp running properly on my computer or am I missing something else? Appreciate anyone's help!