Can someone explain this challenge question to me?

Question

What is the output of this code?
$name="John";
$name="Lennon";
echo "$name $John";

answer is: John Lennon

Answer 1

$name is resolved to $John (value of $name is John), which is a new variable declaration. "Lennon" is assigned to $John.
So we have:
$name = "John" and $John = "Lennon".

Answer 2

thanks! this makes sense!