Try This and Comment

Question

if ((0.1+0.2)==0.3) {
echo "0.1 + 0.2 is equal to 0.3";
}else{
echo "0.1 + 0.2 is not equal to 0.3";
}

Answer 1

Floating point representation of a number is always an approximation. So, 0.1 + 0.2 gives you 0.30000000000000004. That is why you should never compare floating point numbers with the equality/inequality operators

Answer 2

and to understand my answer more make an echo to this code :
echo ((0.1+0.2)-0.3) ;
and see the result 😊

Answer 3

i van say floating number is sensitive