What is the output of this code $a = '1' ; $b = &$a; $b = "2$b" ; echo $a. ", " .$b;

Question

in php

Answer 1

21,21 right?

Answer 2

function
myFunction($a, $b) {

echo $a
*
$b;

}

Answer 3

21,21
as ampersand operator is used so the valud of $a would be same as $b.

Answer 4

21, 21

Answer 5

______myFunction($a, $b) {
echo $a_$b;
}