function get_last_time($time = NULL) {
    $text = '';
    $time = $time === NULL || $time > time() ? time() : intval($time);
    $t = time() - $time; //時間差 （秒）
    $y = date('Y', $time)-date('Y', time());//是否跨年
    switch($t){
     case $t == 0:
       $text = '剛剛';
       break;
     case $t < 60:
      $text = $t . '秒前'; // 一分鐘內
      break;
     case $t < 60 * 60:
      $text = floor($t / 60) . '分鐘前'; //一小時內
      break;
     case $t < 60 * 60 * 24:
      $text = floor($t / (60 * 60)) . '小時前'; // 一天內
      break;
     case $t < 60 * 60 * 24 * 3:
      $text = floor($time/(60*60*24)) ==1 ?'昨天 ' . date('H:i', $time) : '前天 ' . date('H:i', $time) ; //昨天和前天
      break;
     case $t < 60 * 60 * 24 * 30:
      $text = date('m月d日 H:i', $time); //一個月內
      break;
     case $t < 60 * 60 * 24 * 365&&$y==0:
      $text = date('m月d日', $time); //一年內
      break;
     default:
      $text = date('Y年m月d日', $time); //一年以前
      break;
    }
        
    return $text;
}

$data = get_last_time(1533790800);
echo $data;
 

親測可用!