JQuery, используя каждую внутри другой функции [duplicate]

function duration($time){

    $hours = '';
    $minutes = '00:';
    $seconds = '00';

    if($time >= 3600){
        //0 - ~ hours
        $hours    = floor($time / 3600);
        $hours    = str_pad($hours, 2, '0', STR_PAD_LEFT) . ':';
        $time     = $time % 3600;
    }

    if($time >= 60){
        //0 - 60 minute     
        $minutes  = floor($time / 60);
        $minutes  = str_pad($minutes, 2, '0', STR_PAD_LEFT) . ':';
        $time     = $time % 60; 
    }

    if($time){
        //0 - 60 second
        $seconds  = str_pad($time, 2, '0', STR_PAD_LEFT);       
    }

    return $hours . $minutes . $seconds;

}

echo duration(59); // 00:59
echo duration(590); // 09:50
echo duration(5900); // 01:38:20