How to calculate how many days ago in php

How to calculate the time a few days ago in php: First create a PHP sample file; then calculate the time a few days ago through the "function time_tran($time){...}" method.

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

PHP calculates minutes ago, hours ago, and what time Days ago, a few months ago, a few years ago

/*
* $time 需要格式化的时间戳
* return 格式化时间
*/
 
function time_tran($time){
 
$text = '';
 
if(!$time){return $text;}
 
$current = time();
 
$t = $current - $time;
 
$retArr = array('刚刚','秒前','分钟前','小时前','天前','月前','年前');
 
switch($t){
 
case $t < 0://时间大于当前时间，返回格式化时间
 
$text = date(&#39;Y-m-d&#39;,$time);
 
break;
 
case $t == 0://刚刚
 
$text = $retArr[0];
 
break;
 
case $t < 60:// 几秒前
 
$text = $t.$retArr[1];
 
break;
 
case $t < 3600://几分钟前
 
$text = floor($t / 60).$retArr[2];
 
break;
 
case $t < 86400://几小时前
 
$text = floor($t / 3600).$retArr[3];
 
break;
 
case $t < 2592000: //几天前
 
$text = floor($t / 86400).$retArr[4];
 
break;
 
case $t < 31536000: //几个月前
 
$text = floor($t / 2592000).$retArr[5];
 
break;
 
default : //几年前
 
$text = floor($t / 31536000).$retArr[6];
 
}
 
return $text;
 
}

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