Data from carData pulled through to cars page

Have used php include function to pull data from carData and have
printed using print_r to test.
created php class for car attributes

A php class created to contain the attributes of the cars in
carData.php.
created a new array called foreach loop

A cars array created and a foreach loop to fill the array with car
objects with the attributes given originally in carData.
Car adverts created

Using a foreach loop, adverts are now created by echoing all of the data
for each car in the array. Some css added to make the layout nicer to
read. getter methods were added to allow access to the car attributes as
they were made private.
Calculate and print car age

Using the current year and the reg_age of the car in a new function, the
age of the car can be printed using the same method as the other car
attributes.
created variable to get colour

Created a new variable which uses $_GET to get the value of the selected
colour.
Drop down menu to filter colours of cars fixed

An if function added to only show the colour that is selected and is
shown in the url. Reset fixed by allowing null to be selected and
therefore show all cars when no colour is in the url.