将秒数转为HH:MM:SS格式的时间

/**
 * 将秒数转为HH:MM:SS格式的时间
 * @param $seconds
 * @return string
 */
public static function GetHHMMSSBySeconds($seconds)
{
    if ($seconds>3600*24)
    {
        $hours = intval($seconds/3600);
        $leftSeconds = $seconds - $hours* 3600;
        $time = sprintf('%02s',$hours).":".gmstrftime('%M:%S', $leftSeconds);
    }else{
        $time = gmstrftime('%H:%M:%S', $seconds);
    }
    return $time;
}