微秒，秒数为2位小数

Question

I try calculate time of an act in second with 2 decimals.

protected function microtimeFormat($data)
    {
        $duration = microtime(true) - $data;
        $hours = (int)($duration/60/60);
        $minutes = (int)($duration/60)-$hours*60;
        return $seconds = $duration-$hours*60*60-$minutes*60;

    }

this method get start time as $data...and get back it an int second

for example it return 2second.

I try get second with 2 decimals ...

protected function microtimeFormat($data,$format=null,$lng=null)
    {
        $duration = microtime(true) - $data;
        $hours = (float)($duration/60/60);
        $minutes = (float)($duration/60)-$hours*60;
        $seconds = $duration-$hours*60*60-$minutes*60;
        return number_format((float)$seconds, 2, '.', '');
    }

but it return me 0.00 for short time

Answer 1

I think your issue comes from the (float) conversion to $hours and $minutes. When you do so you don't save the decimal part of each so your calculation of $seconds always give 0. Convert to int so you actually save in $hours and $minutes the actual number of seconds they each represent. And the remainder goes to $seconds.

protected function microtimeFormat($data,$format=null,$lng=null)
{
    $duration = microtime(true) - $data;
    $hours = (int)($duration/60/60);
    $minutes = (int)($duration/60)-$hours*60;
    $seconds = $duration-$hours*60*60-$minutes*60;
    return number_format((float)$seconds, 2, '.', '');
}

$start = microtime(TRUE);
sleep(1);
$delay = $this->microtimeFormat($start);
var_dump($delay);

This gives me:

string(4) "1.01"