php实现Facebook风格的 time ago函数

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：

 <?php
 function nicetime($date)
 {
     if(empty($date)) {
         return "No date provided";
     }

     $periods         = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
     $lengths         = array("60","60","24","7","4.35","12","10");

     $now             = time();
     $unix_date         = strtotime($date);

        // check validity of date
     if(empty($unix_date)) {
         return "Bad date";
     }

     // is it future date or past date
     if($now > $unix_date) {
         $difference     = $now - $unix_date;
         $tense         = "ago";

     } else {
         $difference     = $unix_date - $now;
         $tense         = "from now";
     }

     for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
         $difference /= $lengths[$j];
     }

     $difference = round($difference);

     if($difference != 1) {
         $periods[$j].= "s";
     }

     return "$difference $periods[$j] {$tense}";
 }

 $date = "2009-03-04 17:45";
 $result = nicetime($date); // 2 days ago

 ?>

中文函数代码如下：

  function nicetime($date)
     {
         if(empty($date)) {
             return "No date provided";
         }

         $periods         = array("秒", "分钟", "小时", "天", "周", "月", "年", "十年");
         $lengths         = array("60","60","24","7","4.35","12","10");

         $now             = time();
         $unix_date         = strtotime($date);

            // check validity of date
         if(empty($unix_date)) {
             return "Bad date";
         }

         // is it future date or past date
         if($now > $unix_date) {
             $difference     = $now - $unix_date;
             $tense         = "以前";

         } else {
             $difference     = $unix_date - $now;
             $tense         = "from now";
         }

         for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
             $difference /= $lengths[$j];
         }

         $difference = round($difference);

         if($difference != 1) {
             $periods[$j].= "";
         }

         return "$difference$periods[$j]{$tense}";
     }
     //用法示例
     // $date = "2009-03-04 17:45";
     // $result = nicetime($date); // 2 days ago