How the out put is possible

Question

I don't get how the output is coming 3&4
https://code.sololearn.com/w1yqFTu77j5t/?ref=app

Answer 1

https://www.sololearn.com/Discuss/407846/?ref=app

Answer 2

To explain the code
$a=2; //sets the value of $a to 2
$b=$a++; //sets the value of $b to value of $a, which is 2
//$a is incremented to 3
echo $b; //prints 2, the value of $b

Answer 3

thanks man