PHP number: decimal point visible only if needed

Question

I\'d like to know if exists some function to automatically format a number by it\'s decimal, so if I have:

Answer 1

Since I could not find a flexible solution I wrote a simple function to get the best result:

function getValueFormattedWithMinimalDecimals($value, $max_decimals = 2, $dec_point = ',', $thousands_sep = '') {
    $bestNumberOfDecimals = -1;
    $decimal = 0;
    while ($decimal <= $max_decimals) {
        $bestNumberOfDecimals = $decimal;
        $valueDecimals = number_format($value, $decimal);
        if (floatval($value) == $valueDecimals) {
            break;
        }
        $decimal++;
    }
    if($bestNumberOfDecimals > 0 && number_format($value, $bestNumberOfDecimals) == number_format($value, 0)) {
        $bestNumberOfDecimals = 0;
    }

    return number_format($value, $bestNumberOfDecimals, $dec_point, $thousands_sep);
}