how about this?

$var1="variable1";
$var2="I am variable 1";
so, that is the result of $$var2?

im not sure i understand the ? but this is how variable variables work

$var1="variable1";
$var2="I am variable 1";

$$var1 = $var2;

this creates a variable whose name is the value of var1. the result would be a variable named $variable1 = "I am variable 1";