please help with this php question 3 please.

Question 3: Cookies (2 marks) Write a PHP script that creates a cookie with the name "course" and value "C0639 in the user's browser. When the script is first invoked and there is no cookie created yet, it should display a message like: Cookie named 'course' is not set. It should then create a cookie. When the script is reloaded, it should find the existing cookie and display the message: Cookie 'course' has value 'COMP6390