Why doesn't the html br break line tag doesn't work in this code? [closed]

Answer 1

Your PHP means:

echo "Addition = " . $var1 += (3 . "
");
echo "Subtraction = " . $var1 -= (3 ."
");
echo "Addition = " . $var1 *= (3 . "
");
echo "Addition = " . $var1 /= (3 ."
");

And number + 3 . '
' is number + (int)(3 . '
') which is number + 3. No
exists now due to retyping to number(converting to number).

Use brackets around equations.

echo "Addition = " . ($var1 += 3) . "
";
echo "Subtraction = " . ($var1 -= 3) ."
";
echo "Addition = " . ($var1 *= 3) . "
";
echo "Addition = " . ($var1 /= 3) ."
";