About php function to calculate previous days

The method to implement the function of calculating the previous days in php is: first create a PHP sample file; then define a "time_tran" method; and then pass "return floor($dur/86400).'days ago';" The method returns the results from a few days ago.

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php calculates minutes ago, hours ago, days ago Several functions

1. Function implementation

Example 1:

function time_tran($the_time){
   $now_time = date("Y-m-d H:i:s",time()+8*60*60);
   $now_time = strtotime($now_time);
   $show_time = strtotime($the_time);
   $dur = $now_time - $show_time;
   if($dur < 0){
    return $the_time;
   }else{
    if($dur < 60){
     return $dur.&#39;秒前&#39;;
    }else{
     if($dur < 3600){
      return floor($dur/60).&#39;分钟前&#39;;
     }else{
      if($dur < 86400){
       return floor($dur/3600).&#39;小时前&#39;;
      }else{
       if($dur < 259200){//3天内
        return floor($dur/86400).&#39;天前&#39;;
       }else{
        return $the_time;
       }
      }
 }

Example 2:

<?php
function format_date($time){
    $t=time()-$time;
    $f=array(
        &#39;31536000&#39;=>&#39;年&#39;,
        &#39;2592000&#39;=>&#39;个月&#39;,
        &#39;604800&#39;=>&#39;星期&#39;,
        &#39;86400&#39;=>&#39;天&#39;,
        &#39;3600&#39;=>&#39;小时&#39;,
        &#39;60&#39;=>&#39;分钟&#39;,
        &#39;1&#39;=>&#39;秒&#39;
    );
    foreach ($f as $k=>$v)    {
        if (0 !=$c=floor($t/(int)$k)) {
            return $c.$v.&#39;前&#39;;
        }
    }
}

Example 3:

function formatTime($date) {
$str = '';
$timer = strtotime($date);
$diff = $_SERVER['REQUEST_TIME'] - $timer;
$day = floor($diff / 86400);
$free = $diff % 86400;
if($day > 0) {
return $day."天前";
}else{
if($free>0){
$hour = floor($free / 3600);
$free = $free % 3600;
if($hour>0){
return $hour."小时前";
}else{
if($free>0){
$min = floor($free / 60);
$free = $free % 60;
if($min>0){
return $min."分钟前";
}else{
if($free>0){
return $free."秒前";
}else{
return '刚刚';
}
}
}else{
return '刚刚';
}
}
}else{
return '刚刚';
}
}
}

Example 4:

function time_tran($the_time){
$now_time = date("Y-m-d H:i:s",time()+8*60*60); 
$now_time = strtotime($now_time);
$show_time = strtotime($the_time);
$dur = $now_time - $show_time;
if($dur < 0){
return $the_time; 
}else{
if($dur < 60){
    return $dur.&#39;秒前&#39;; 
}else{
    if($dur < 3600){
   return floor($dur/60).&#39;分钟前&#39;; 
    }else{
   if($dur < 86400){
   return floor($dur/3600).&#39;小时前&#39;; 
   }else{
   if($dur < 259200){//3天内
       return floor($dur/86400).&#39;天前&#39;;
   }else{
       return $the_time; 
   }
   }
    }
}
}
}

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