php版实现友好的时间显示方式（例如:2小时前），php显示方式

完整php类，通常我会配合smary使用，快捷使用 (plugins/function.rdate.php)，更多php技术开发就去php教程网，http://php.662p.com

<?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);}// 03:02function shartTime($ts) {    return strftime("%H:%M",$ts);}// 03:02:01function 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 class="brush:php;toolbar:false">";echo strftime("a%a\n"); //  a  星期二             echo strftime("A%A\n"); //  A  星期二             echo strftime("b%b\n"); //  b  四月               echo strftime("B%B\n"); //  B  四月               echo strftime("c%c\n"); //  c  2006-4-18 3:48:11  echo strftime("C%C\n"); //  C                     echo strftime("d%d\n"); //  d  18                 echo strftime("D%D\n"); //  D                     echo strftime("e%e\n"); //  e                     echo strftime("g%g\n"); //  g                     echo strftime("G%G\n"); //  G                     echo strftime("h%h\n"); //  h                     echo strftime("H%H\n"); //  H  03                 echo strftime("I%I\n"); //  I  03                 echo strftime("j%j\n"); //  j  108                echo strftime("m%m\n"); //  m  04                 echo strftime("M%M\n"); //  M  48                 echo strftime("n%n\n"); //  n                     echo strftime("p%p\n"); //  p  上午               echo strftime("r%r\n"); //  r                     echo strftime("R%R\n"); //  R                     echo strftime("S%S\n"); //  S  11                 echo strftime("t%t\n"); //  t                     echo strftime("T%T\n"); //  T                     echo strftime("u%u\n"); //  u                     echo strftime("U%U\n"); //  U  16                 echo strftime("V%V\n"); //  V                     echo strftime("W%W\n"); //  W  16                 echo strftime("w%w\n"); //  w  2                  echo strftime("x%x\n"); //  x  2006-4-18          echo strftime("X%X\n"); //  X  3:48:11            echo strftime("y%y\n"); //  y  06                 echo strftime("Y%Y\n"); //  Y  2006               echo strftime("Z%Z\n"); //  Z  中国标准时间       echo strftime("%%%\n"); //  %                     */

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