You need to declare a variable in PHP to store a user's age. How would you do this?

In PHP, variables are declared with a dollar sign ($) followed by the variable name. So, to declare a variable to store a user's age, you would write $userAge = 21; PHP is a loosely typed language, which means that you don't have to declare the data type of a variable when you create it. Learn more: https://www.php.net/manual/en/language.variables.basics.php