PHP:格式化时间 Stackoverflow 或 Apple Mail 样式 - PHP: formatting time Stackoverflow or Apple Mail-style

PHP: formatting time Stackoverflow or Apple Mail-style

php.net 文档中有一个非常好的函数，它使您能够以Facebook风格的方式格式化时间（例如，2 minutes ago，4 weeks ago或3 years ago）。

但是，我更喜欢Stackoverflow和Apple Mail的方式，通常如下：

当前日期以x seconds ago、x hours ago或时间（例如4:35pm）列出。
被列为"昨天"。
之后的所有日子都按 M/D/Y 列出。

有没有人改编这个 php.net 脚本来做到这一点，或者可能共享一个不同的脚本来实现相同的目标？

<?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
?>

好的，我回答了我自己的问题。

关键是跟踪for循环经历了多少轮除法，直到当前时间的商减去输入时间 $difference $j $lengths数组项的第个值小于该数组的第 $j+1 个值。

我通过增加变量$i来跟踪这一点（请注意if/elseif/else子句演示了我上面提到的 3 点中的每一点）在这个修改后的 nicetime() 中：

     ///http://php.net/manual/en/function.time.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";
}
$i=0;
for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
    $i++;
    $difference /= $lengths[$j];
}
$difference = round($difference);
if($difference != 1) {
    $periods[$j].= "s";
}
if($i<3){
    $day="$difference $periods[$j] {$tense}";
    return $day;
    //satisfies case #1 where time is listed as seconds, minutes, hours ago
}
elseif($i==3){
    $difference == 1 && $periods[$j]=='day' ? $day='yesterday':     
    $day="$difference $periods[$j] {$tense}";
    return $day;        
    //satisfies case #2 where time is listed as yesterday if not the current day
}
else{
    return $date;       
    // satisfies case #3 where date is listed as M/D/Y if greater than a week old
}   
}
echo "case#1: ".nicetime('2012-08-13 23:12:16');
echo "case#2: ".nicetime('2012-08-12 23:12:16');
echo "case#3: ".nicetime('2012-07-07 23:12:16');