Create a PHP class named 'Person' with a constructor that takes two parameters: $name and $age.

$//$ The class should have a method named 'introduce' that echoes "Hello, my name is $\{$name$\}$ and I am $\{$age$\}$ years old."

$//$ Your task is to complete the code for the 'Person' class and the 'introduce' method. m$1.$php