discuz 个性化时间函数 - 摘取

define('DATEFORMAT', 'Y-m-d'); // 日期格式
define('TIMEFORMAT', 'H:i:s'); //时间格式
define('DATECONVERT', 1); //是否使用人性化时间格式
define('TIMEOFFSET', '8'); //默认所在时区
define('TIMESTAMP', time());
$lang = array(
    'before' => '前',
    'day' => '天',
    'yday' => '昨天',
    'byday' => '前天',
    'hour' => '小时',
    'half' => '半',
    'min' => '分钟',
    'sec' => '秒',
    'now' => '刚刚',
);


$timestamp = strtotime('2014-3-12 10:20:34');
$time = dgmdate($timestamp, 'u');
echo $time;


function dgmdate($timestamp, $format = 'dt', $timeoffset = '9999', $uformat = '') {
    global $lang;
    $format == 'u' && !DATECONVERT && $format = 'dt';
    static $dformat, $tformat, $dtformat, $offset;
    if ($dformat === null) {
        $dformat = DATEFORMAT;
        $tformat = TIMEFORMAT;
        $dtformat = $dformat . ' ' . $tformat;
        $offset = TIMEOFFSET;
    }
    $timeoffset = $timeoffset == 9999 ? $offset : $timeoffset;
    $timestamp += $timeoffset * 3600;
    $format = empty($format) || $format == 'dt' ? $dtformat : ($format == 'd' ? $dformat : ($format == 't' ? $tformat : $format));
    if ($format == 'u') {
        $todaytimestamp = TIMESTAMP - (TIMESTAMP + $timeoffset * 3600) % 86400 + $timeoffset * 3600;
        $s = gmdate(!$uformat ? str_replace(":i", ":i:s", $dtformat) : $uformat, $timestamp);
        $time = TIMESTAMP + $timeoffset * 3600 - $timestamp;
        if ($timestamp >= $todaytimestamp) {
            if ($time > 3600) {
                return '<span title="' . $s . '">' . intval($time / 3600) . '&nbsp;' . $lang['hour'] . $lang['before'] . '</span>';
            } elseif ($time > 1800) {
                return '<span title="' . $s . '">' . $lang['half'] . $lang['hour'] . $lang['before'] . '</span>';
            } elseif ($time > 60) {
                return '<span title="' . $s . '">' . intval($time / 60) . '&nbsp;' . $lang['min'] . $lang['before'] . '</span>';
            } elseif ($time > 0) {
                return '<span title="' . $s . '">' . $time . '&nbsp;' . $lang['sec'] . $lang['before'] . '</span>';
            } elseif ($time == 0) {
                return '<span title="' . $s . '">' . $lang['now'] . '</span>';
            } else {
                return $s;
            }
        } elseif (($days = intval(($todaytimestamp - $timestamp) / 86400)) >= 0 && $days < 7) {
            if ($days == 0) {
                return '<span title="' . $s . '">' . $lang['yday'] . '&nbsp;' . gmdate($tformat, $timestamp) . '</span>';
            } elseif ($days == 1) {
                return '<span title="' . $s . '">' . $lang['byday'] . '&nbsp;' . gmdate($tformat, $timestamp) . '</span>';
            } else {
                return '<span title="' . $s . '">' . ($days + 1) . '&nbsp;' . $lang['day'] . $lang['before'] . '</span>';
            }
        } else {
            return $s;
        }
    } else {
        return gmdate($format, $timestamp);
    }
}