Who first say vaild I follow

Question

—>output hacker<—
$h = ‘a’;
$a = ‘c’;
$c = ‘k’;
$k = ‘e’;
$e = ’r’;
$r = ‘hacker’
What next?

Answer 1

in PHP code next
echo $$$h;

Answer 2

look at this

https://code.sololearn.com/WNvob9H12K32/?ref=app