php 将秒转换成具体的天时分秒

public function timesecond($seconds)//将秒时间转换具体时间
{
    $seconds = (int)$seconds;
    if( $seconds>3600 ){
        if( $seconds>24*3600 ){
            $days        = (int)($seconds/86400);
            $days_num    = $days."天";
            $seconds    = $seconds%86400;//取余
        }
        $hours = intval($seconds/3600);
        $minutes = $seconds%3600;//取余下秒数
        $time = $days_num.$hours."小时".gmstrftime('%M分钟%S秒', $minutes);
    }else{
        $time = gmstrftime('%H小时%M分钟%S秒', $seconds);
    }
    return $time;
}
echo  timesecond(180);