php友好时间显示方式实现代码

<?php
/*
* Data time functions.
  // * 模块
*/
defined('TSKY') || die('Permission Denied!');
 
function fmtMonth($month){
    return date('F, Y',day2time($month.'01'));
}
 
//
function fmt_month($ts) {
    return strftime("%b,%Y",$ts);
}
 
// 03:02
function shartTime($ts) {
    return strftime("%H:%M",$ts);
}
// 03:02:01
function longTime($ts) {
    return strftime("%T",$ts);
}
//4月18日
function shortDate($ts) {
    return date("n月d日",$ts);
}
//2006年4月18日
function longDate($ts) {
    return date("Y年n月d日",$ts);
}
 
function dateTime($ts) {
    return date("Y年n月d日 H:i:s",$ts);
}
function fullDateTime($ts) {
    return date("Y年n月d日 ",$ts).week($ts);
}
function week($ts) {
    global $lang;
    return  $lang['weekDay'][date('w',$ts)];
}
 
function relatively_date($date) {
    if (!preg_match('/^d+$/', $date)) $date = strtotime(trim($date));
    $sec = time() - $date;
    switch(true){
        case $sec < 3600:
            return round($sec/60). ' 分钟前';
        case $sec < 86400:
            return round($sec/3600). ' 小时前';
        case $sec < (86400 * 7):
            return round($sec/86400). ' 天前';//days ago
        case $sec < (86400 * 7 * 4):
            return round($sec/(86400*7)). ' 周前'; //weeks ago
        default:
            return longDate($date);
    }
}
 
function nextMonth($month/*200512->200601*/){
    return date('Ym',strtotime('+1 month',strtotime($month.'01')));
}
function prevMonth($month/*200512->200511*/){
    return date('Ym',strtotime('-1 month',strtotime($month.'01')));
}
function prevDay($day/*20050826*/){
    $day = substr($day,0,8);
    return date('Ymd',strtotime('-1 day',strtotime($day)));
}
 
function nextDay($day/*20050826*/){
    $day = substr($day,0,8);
    return date('Ymd',strtotime('+1 day',strtotime($day)));
}
function nextExistsDay($day/*20050109*/){
    $day = nextDay($day);
    while(!hasTopic($day) && $day < TODAY){
        $day = nextDay($day);
    }
    return hasTopic($day) ? $day : false;
}
function prevExistsDay($day/*20050109*/){
    global $cfg;
    $day = prevDay($day);
    while(!hasTopic($day) && (int)$day > $cfg->origDate){
        $day = prevDay($day);
    }
    return hasTopic($day) ? $day : false;
}
 
function prev_day($day){$day = substr($day,0,8);return date('Ymd',strtotime('-1 day',strtotime($day)));}
function long_date($ts){return date("Y年n月d日",$ts);}
function day2time($day){return @strtotime($day);}

/*
echo "<pre>";
echo strftime("a%an"); //  a  星期二            
echo strftime("A%An"); //  A  星期二            
echo strftime("b%bn"); //  b  四月              
echo strftime("B%Bn"); //  B  四月              
echo strftime("c%cn"); //  c  2006-4-18 3:48:11 
echo strftime("C%Cn"); //  C                    
echo strftime("d%dn"); //  d  18                
echo strftime("D%Dn"); //  D                    
echo strftime("e%en"); //  e                    
echo strftime("g%gn"); //  g                    
echo strftime("G%Gn"); //  G                    
echo strftime("h%hn"); //  h                    
echo strftime("H%Hn"); //  H  03                
echo strftime("I%In"); //  I  03                
echo strftime("j%jn"); //  j  108               
echo strftime("m%mn"); //  m  04                
echo strftime("M%Mn"); //  M  48                
echo strftime("n%nn"); //  n                    
echo strftime("p%pn"); //  p  上午              
echo strftime("r%rn"); //  r                    
echo strftime("R%Rn"); //  R                    
echo strftime("S%Sn"); //  S  11                
echo strftime("t%tn"); //  t                    
echo strftime("T%Tn"); //  T                    
echo strftime("u%un"); //  u                    
echo strftime("U%Un"); //  U  16                
echo strftime("V%Vn"); //  V                    
echo strftime("W%Wn"); //  W  16                
echo strftime("w%wn"); //  w  2                 
echo strftime("x%xn"); //  x  2006-4-18         
echo strftime("X%Xn"); //  X  3:48:11           
echo strftime("y%yn"); //  y  06                
echo strftime("Y%Yn"); //  Y  2006              
echo strftime("Z%Zn"); //  Z  中国标准时间      
echo strftime("%%%n"); //  %                    
*/