php实现Facebook风格的 time ago函数_php 实现 3 days ago-优快云博客

本文介绍了一种使用PHP实现的时间ago函数，该函数能够将指定日期转换为易于阅读的相对时间表述，例如“2天以前”。文章提供了完整的英文及中文版本代码，并附带示例说明。

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php实现Facebook风格的 time ago函数

非常好用，只要把里面的英文替换成中文就行了

英文函数代码如下：

 1 <?php
 2 function nicetime($date)
 3 {
 4     if(empty($date)) {
 5         return "No date provided";
 6     }
 7   
 8     $periods         = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
 9     $lengths         = array("60","60","24","7","4.35","12","10");
10   
11     $now             = time();
12     $unix_date         = strtotime($date);
13   
14        // check validity of date
15     if(empty($unix_date)) {    
16         return "Bad date";
17     }
18   
19     // is it future date or past date
20     if($now > $unix_date) {    
21         $difference     = $now - $unix_date;
22         $tense         = "ago";
23   
24     } else {
25         $difference     = $unix_date - $now;
26         $tense         = "from now";
27     }
28   
29     for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
30         $difference /= $lengths[$j];
31     }
32   
33     $difference = round($difference);
34   
35     if($difference != 1) {
36         $periods[$j].= "s";
37     }
38   
39     return "$difference $periods[$j] {$tense}";
40 }
41   
42 $date = "2009-03-04 17:45";
43 $result = nicetime($date); // 2 days ago
44   
45 ?>

中文函数代码如下：

 1  function nicetime($date)
 2     {
 3         if(empty($date)) {
 4             return "No date provided";
 5         }
 6       
 7         $periods         = array("秒", "分钟", "小时", "天", "周", "月", "年", "十年");
 8         $lengths         = array("60","60","24","7","4.35","12","10");
 9       
10         $now             = time();
11         $unix_date         = strtotime($date);
12       
13            // check validity of date
14         if(empty($unix_date)) {    
15             return "Bad date";
16         }
17       
18         // is it future date or past date
19         if($now > $unix_date) {    
20             $difference     = $now - $unix_date;
21             $tense         = "以前";
22       
23         } else {
24             $difference     = $unix_date - $now;
25             $tense         = "from now";
26         }
27       
28         for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
29             $difference /= $lengths[$j];
30         }
31       
32         $difference = round($difference);
33       
34         if($difference != 1) {
35             $periods[$j].= "";
36         }
37       
38         return "$difference$periods[$j]{$tense}";
39     }
40     //用法示例
41     // $date = "2009-03-04 17:45";
42     // $result = nicetime($date); // 2 days ago