规则是：今天的，显示几秒前，几分钟前，几小时前，昨天的显示昨天 上午 XX:XX 再往前，本周的，显示周几+时间，再往前，本年的，显示月日+时间，再往前，显示年月日+时间
<?php
/**
* 类似微信的时间显示
* 规则是：今天的，显示几秒前，几分钟前，几小时前，昨天的显示昨天 上午 XX:XX
* 再往前，本周的，显示周几+时间，再往前，本年的，显示月日+时间，再往前，显示年月日+时间
* User: tu6ge
* Date: 2016/7/21
* Time: 15:21
*/
function timespan($time){
$the_day_time = strtotime(date('Y-m-d',$time));
$one_day_second = $time-$the_day_time;
if($one_day_second<3600*6){
$pre_name = '凌晨';
}elseif($one_day_second<3600*12){
$pre_name = '上午';
}elseif($one_day_second<3600*18){
$pre_name = '下午';
}else{
$pre_name = '晚上';
}
$now_time = time();
$today_time = strtotime(date('Y-m-d'));
$yesterday_time = $today_time-86400;
$now_week = date('w',$now_time);
$now_week==0 && $now_week=7;
$now_week_time = $today_time-($now_week-1)*86400;
$now_year_time = strtotime(date('Y-01-01'));
$the_week = date('w',$time);
$the_week==0 && $the_week=7;
$week_pre_name = '';
switch ($the_week){
case 1:
$week_pre_name = '一';
break;
case 2:
$week_pre_name = '二';
break;
case 3:
$week_pre_name = '三';
break;
case 4:
$week_pre_name = '四';
break;
case 5:
$week_pre_name = '五';
break;
case 6:
$week_pre_name = '六';
break;
case 7:
$week_pre_name = '日';
break;
default:
$week_pre_name = '';
}
$test = '';
if($time>=$now_time){
//未来
$test = '';
}elseif($time>$today_time){
//今天
$diff_time = $now_time-$time;
if($diff_time<60){
$test = $diff_time.'秒前';
}elseif($diff_time<3600){
$test = intval($diff_time/60).'分钟前';
}else{
$test = intval($diff_time/3600).'小时前';
}
}elseif($time>$yesterday_time){
//昨天
$test = '昨天 '.$pre_name.' '.date('H:i',$time);
}elseif($time>$now_week_time){
//这周内
$test = '周'.$week_pre_name.' '.$pre_name.' '.date('H:i',$time);
}elseif($time>$now_year_time){
//今年
$test = date('m月d日',$time).' '.$pre_name.' '.date('H:i',$time);
}else{
//更早
$test = date('Y月m月d日',$time).' '.$pre_name.' '.date('H:i',$time);
}
return $test;
}
$time = time()-2;
for($i=0;$i<30;$i++){
echo timespan($time);
echo '<br>';
$time = $time-3600*6;
}
//########################上面是用函数实现的
//########################下面是用类实现的
define('NOW_TIME',time());
define('TODAY_TIME',strtotime(date('Y-m-d',NOW_TIME)));
define('YESTERDAY_TIME',TODAY_TIME-86400);
$now_week = date('w',NOW_TIME);
$now_week==0 && $now_week=7;
define('NOW_WEEK_TIME',TODAY_TIME-($now_week-1)*86400);
define('NOW_YEAR_TIME',strtotime(date('Y-01-01')));
class timespan{
public $time; //要计算的时间的时间戳
const now_time=NOW_TIME;
const today_time=TODAY_TIME;
const yesterday_time = YESTERDAY_TIME;
const now_week_time = NOW_WEEK_TIME;
const now_year_time = NOW_YEAR_TIME;
function __construct($time=null)
{
$this->time = $time;
}
/**
* 返回 上午，下午，晚上，凌晨
* @param null $time
* @return string
*/
function get_pre_name($time=null){
!empty($time) && $this->time = $time;
$the_day_time = strtotime(date('Y-m-d',$this->time));
$one_day_second = $this->time-$the_day_time;
if($one_day_second<3600*6){
$pre_name = '凌晨';
}elseif($one_day_second<3600*12){
$pre_name = '上午';
}elseif($one_day_second<3600*18){
$pre_name = '下午';
}else{
$pre_name = '晚上';
}
return $pre_name;
}
function get_week_name($time=null){
!empty($time) && $this->time = $time;
$the_week = date('w',$this->time);
$the_week==0 && $the_week=7;
$week_pre_name = '';
switch ($the_week){
case 1:
$week_pre_name = '一';
break;
case 2:
$week_pre_name = '二';
break;
case 3:
$week_pre_name = '三';
break;
case 4:
$week_pre_name = '四';
break;
case 5:
$week_pre_name = '五';
break;
case 6:
$week_pre_name = '六';
break;
case 7:
$week_pre_name = '日';
break;
default:
$week_pre_name = '';
}
return $week_pre_name;
}
function formate($time = null){
!empty($time) && $this->time = $time;
$test = '';
if($this->time>=self::now_time){
//未来
$test = '';
}elseif($this->time>self::today_time){
//今天
$diff_time = self::now_time-$this->time;
if($diff_time<60){
$test = $diff_time.'秒前';
}elseif($diff_time<3600){
$test = intval($diff_time/60).'分钟前';
}else{
$test = intval($diff_time/3600).'小时前';
}
}elseif($this->time>self::yesterday_time){
//昨天
$pre_name = $this->get_pre_name();
$test = '昨天 '.$pre_name.' '.date('H:i',$this->time);
}elseif($this->time>self::now_week_time){
//这周内
$pre_name = $this->get_pre_name();
$week_pre_name = $this->get_week_name();
$test = '周'.$week_pre_name.' '.$pre_name.' '.date('H:i',$this->time);
}elseif($this->time>self::now_year_time){
//今年
$pre_name = $this->get_pre_name();
$test = date('m月d日',$this->time).' '.$pre_name.' '.date('H:i',$this->time);
}else{
//更早
$pre_name = $this->get_pre_name();
$test = date('Y月m月d日',$this->time).' '.$pre_name.' '.date('H:i',$this->time);
}
return $test;
}
}
//调用方法
$obj = new timespan();
for($i=0;$i<30;$i++){
echo $obj->formate($time);
echo '<br>';
$time = $time-3600*6;
}对了，我再另外一个地方，也发布了一次，地址是http://www.cnblogs.com/tu6ge/p/5694800.html 