Float with PHP precision

Question

I am bringing from the database the sum of the values and as a result it returns me as the example below:

6.3285714285714

I wish he’d stay that way:

6.32

I’ve tried the ceil() and the round(), but both returned me for more or less. I tried to use the substr($valor,0,4);, but the problem is when the value is:

6.328

Remembering that the value can also return:

16.3285714285714

And I believe that the substr() would not be the solution. How could I solve this?

Answer 1

In fact it lacks a function to truncate in PHP, they made a in the OS:

function truncate($val, $f = "0") {
    if(($p = strpos($val, '.')) !== false) {
        $val = floatval(substr($val, 0, $p + 1 + $f));
    }
    return $val;
}
echo truncate(6.3285714285714, 2);

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.

Answer 2

I guess in this case I wouldn’t have to round up?

$valor = 6.3285714285714;
echo number_format(floatval($valor), 2, '.', '');

Now if you don’t want to round it up:

echo number_format(floor(($valor*100))/100, 2, '.', '');