php计算给定时间之前的函数用法实例
这篇文章主要介绍了php计算给定时间之前的函数用法,实例分析了php计算时间的技巧,非常具有实用价值,需要的朋友可以参考下。
本文实例讲述了php计算给定时间之前的函数用法，分享给大家供大家参考，具体如下：
这里给定一个时间，计算这个时间在多久前，比如：2天前，1年前
- <?php
- function prettyDate($date){
- $time = strtotime($date);
- $now = time();
- $ago = $now - $time;
- if($ago < 60){
- $when = round($ago);
- $s = ($when == 1)?"second":"seconds";
- return "$when $s ago";
- }elseif($ago < 3600){
- $when = round($ago / 60);
- $m = ($when == 1)?"minute":"minutes";
- return "$when $m ago";
- }elseif($ago >= 3600 && $ago < 86400){
- $when = round($ago / 60 / 60);
- $h = ($when == 1)?"hour":"hours";
- return "$when $h ago";
- }elseif($ago >= 86400 && $ago < 2629743.83){
- $when = round($ago / 60 / 60 / 24);
- $d = ($when == 1)?"day":"days";
- return "$when $d ago";
- }elseif($ago >= 2629743.83 && $ago < 31556926){
- $when = round($ago / 60 / 60 / 24 / 30.4375);
- $m = ($when == 1)?"month":"months";
- return "$when $m ago";
- }else{
- $when = round($ago / 60 / 60 / 24 / 365);
- $y = ($when == 1)?"year":"years";
- return "$when $y ago";
- }
- }
- echo prettyDate("2012-07-22 12:23:45")."<br />";
- echo prettyDate("2010-11-12 22:25:45")."<br />";
- echo prettyDate("2012-01-01 01:00:00")."<br />";
- echo prettyDate("2001-05-30 00:00:00")."<br />";