function formatTime($time) {
    $time = (int) substr($time, 0, 10);
    $int = time() - $time;
    $str = '';
    if ($int <= 2){
      $str = sprintf('刚刚', $int);
    }elseif ($int < 60){
      $str = sprintf('%d秒前', $int);
    }elseif ($int < 3600){
      $str = sprintf('%d分钟前', floor($int / 60));
    }elseif ($int < 86400){
      $str = sprintf('%d小时前', floor($int / 3600));
    }elseif ($int < 2592000){
      $str = sprintf('%d天前', floor($int / 86400));
    }else{
      $str = date('Y-m-d H:i:s', $time);
    }
    return $str;
  }

  function formatTime($time)
  {
    $text = '';
    $time = intval($time);
    $ctime = time();
    $t = $ctime - $time; //时间差
    if ($t < 0) {
      return date('Y-m-d', $time);
    }
    ;
    $y = date('Y', $ctime) - date('Y', $time);//是否跨年
    switch ($t) {
      case $t == 0:
        $text = '刚刚';
        break;
      case $t < 60://一分钟内
        $text = $t . '秒前';
        break;
      case $t < 3600://一小时内
        $text = floor($t / 60) . '分钟前';
        break;
      case $t < 86400://一天内
        $text = floor($t / 3600) . '小时前'; // 一天内
        break;
      case $t < 2592000://30天内
        if($time > strtotime(date('Ymd',strtotime("-1 day")))) {
          $text = '昨天';
        } elseif($time > strtotime(date('Ymd',strtotime("-2 days")))) {
          $text = '前天';
        } else {
          $text = floor($t / 86400) . '天前';
        }
        break;
      case $t < 31536000 && $y == 0://一年内 不跨年
        $m = date('m', $ctime) - date('m', $time) -1;

        if($m == 0) {
          $text = floor($t / 86400) . '天前';
        } else {
          $text = $m . '个月前';
        }
        break;
      case $t < 31536000 && $y > 0://一年内 跨年
        $text = (11 - date('m', $time) + date('m', $ctime)) . '个月前';
        break;
      default:
        $text = (date('Y', $ctime) - date('Y', $time)) . '年前';
        break;
    }

    return $text;
  }

//格式化友好显示时间
function formatTime($time){
	$now=time();
	$day=date('Y-m-d',$time);
	$today=date('Y-m-d');
	
	$dayArr=explode('-',$day);
	$todayArr=explode('-',$today);
	
	//距离的天数，这种方法超过30天则不一定准确，但是30天内是准确的，因为一个月可能是30天也可能是31天
	$days=($todayArr[0]-$dayArr[0])*365+(($todayArr[1]-$dayArr[1])*30)+($todayArr[2]-$dayArr[2]);
	//距离的秒数
	$secs=$now-$time;
	
	if($todayArr[0]-$dayArr[0]>0 && $days>3){//跨年且超过3天
		return date('Y-m-d',$time);
	}else{
	
		if($days<1){//今天
			if($secs<60)return $secs.'秒前';
			elseif($secs<3600)return floor($secs/60)."分钟前";
			else return floor($secs/3600)."小时前";
		}else if($days<2){//昨天
			$hour=date('h',$time);
			return "昨天".$hour.'点';
		}elseif($days<3){//前天
			$hour=date('h',$time);
			return "前天".$hour.'点';
		}else{//三天前
			return date('m月d号',$time);
		}
	}
}