Differences between PHP round and sprintf functions

PHP round and sprintf Difference of function

function format_value1($data, $v = 2)
{
 
    return sprintf("%.{$v}f", $data);
}
function format_value2($data, $v = 2)
{
    return  round($data, $v);
}

        $value='343.39';
        $lastValue='303.12';
        $unit='1.5';
        $price = format_value1(($value - $lastValue) * $unit);
        // Output is 60.40
         $price = format_value2(($value - $lastValue) * $unit);
         // Output is 60.41
        
      

round Functional ratio sprintf More accurate round The disadvantage is when dealing with integer formatting The return will not be the standard two decimal places It can be used sprintf Just a formatted number

function format_value($data, $v = 2)
{
    
    $data = round($data, $v);
    return sprintf("%.{$v}f", $data);
}