'Converting MP3 duration time

I'm using my iTunes library to get data from about 1,100 mp3s and I'm running into a small issue in getting the duration of the library into minutes and seconds.

$duration = 1893642;
$minutes = bcmod(($duration / 60), 60);
$seconds = bcmod($duration, 60);
echo $minutes.":".$seconds; //returns 0:42

The problem is that this specific MP3 is actually 31:42. Any thoughts on why this isn't working?

phpmathmp3duration


Solution 1:[1]

Try this function

function formatTime($secs) {
    $times = array(3600, 60, 1);
    $time = '';
    $tmp = '';
    for($i = 0; $i < 3; $i++) {
        $tmp = floor($secs / $times[$i]);
        if($tmp < 1) {
            $tmp = '00';
        }
        elseif($tmp < 10) {
            $tmp = '0' . $tmp;
        }
        $time .= $tmp;
        if($i < 2) {
            $time .= ':';
        }
        $secs = $secs % $times[$i];
    }
    return $time;
}

Solution 2:[2]

Not sure if the following function was available when this question was written, but as it's a question I've been asking myself so here goes.

I used the answer above:

$seconds = bcmod($row{'playtime_seconds'}, 60);
$minutes = floor($row{'playtime_seconds'} / 60);
$hours = floor($minutes / 60);

Which works for the majority of times, but there is no padding - so you can end up with 20:1 when it should be 20:01 - and it's not to good over an hour - one length comes in at length="1:70:9" - so an alternative is to use the "date" function.

<?=date("H:i:s", $duration); ?>

which returns 00:31:42 from that number of seconds

Solution 3:[3]

$duration_str = sprintf('%s:%02s:%02s',
 floor($duration_int / 3600), // hours
 floor($duration_int / 60) - floor($duration_int / 3600) * 60, // minutes
 $duration_int % 60); // seconds

The *printf functions provide formatting. In this case the leading zero.

The minutes line is the most complex part, since you have to calculate the hours (duration [s] / 3600 [s/h]), then round down to integer (floor()), then multiply with 60 to transform to minutes, then subtract that from the total number of minutes (duration [s] / 60 [s/m]).

If your durations are shorter than an hour, the code is much simpler:

$duration_str = sprintf('%s:%02s', floor($duration_int / 60), $duration_int % 60);

The result is still correct for a duration greater than 59 minutes, but just not as readable (31560 minutes in the example).

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Wazy
Solution 2 Phil
Solution 3 Alien426

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