Write Function Help?

Hi
I'm writing a page and need some help.

I want to have a function where something like this

$title=My High School

Then in the body if I write something such as

Hey my high schools name is $title its the greatest school. Because $title blah blah blah.

What would a script/funcation like that look like if it was properly writtem?

<?
$title = "My very nice school";
$city = "Gouda";
?>

I am taking courses at <? echo $title ?> in <? echo $city ?>

</body>
</html>

THANK YOU 🙂