Question

I have two float variables that are equal, I retrieve them by PHP and subtract them. the result equals (7.105427357601E-15) I tried to change to double or to decimal and none of that worked. This is what I use in PHP:

$giftcard_balance = $giftcard['balance'];
$total = $product['price'];

$total -= $giftcard_balance;
echo $total;

Here instead of showing 0, it’s showing (7.105427357601E-15)

Anyone can help please?

Answer 1

In order to get rid of the float inaccuracy, you can, for example, use number formatting.

$a = 7.105427357601E-15;
$b = number_format($a, 2);
echo $a , "\n", $b , "\n";