Here are some more basic variables:
<?php $my_name = "Brad"; $my_age = 25; $fav_colour = "Blue"; ?>
If I want to display these variables on the page in some meaningful way, I could use the PHP Print Function:
<?php print("My name is $my_name!
I'm $my_age years old, and like the colour $fav_colour."); ?>
PHP will spit out the following phrase:
My name is Brad!
I'm 25 years old, and like the colour Blue.