``` /** * 格式化時間 * @param [type] $time [要格式化的時間戳] * @return [type] [description] */ function time_format ($time) { //當前時間 $now = time(); //今天零時零分零秒 $today = strtotime(date('y-m-d', $now)); //傳遞時間與當前時秒相差的秒數 $diff = $now - $time; $str = ''; switch ($time) { case $diff < 60 : $str = $diff . '秒前'; break; case $diff < 3600 : $str = floor($diff / 60) . '分鐘前'; break; case $diff < (3600 * 8) : $str = floor($diff / 3600) . '小時前'; break; case $time > $today : $str = '今天&nbsp;&nbsp;' . date('H:i', $time); break; default : $str = date('Y-m-d H:i:s', $time); } return $str; } ```