[函数]PHP个性化时间的封装函数

函数封装:

/**
 * 格式化时间
 * @param integer $timestamp 时间戳
 * @param string $format dt=日期时间 d=日期 t=时间 u=个性化 其他=自定义
 * @param integer $timeoffset 时区值
 * @param string $custom_format 自定义时间格式
 * @return string
 */
function dgmdate($timestamp, $format = 'dt', $timeoffset = '9999', $custom_format = '')
{
    $return = '';
    $now = time();
    $day_format = 'Y-n-j';
    $time_format = 'H:i:s';
    $date_format = $day_format . ' ' . $time_format;
    $offset = 8; //这里默认是东八区，也就是北京时间
    $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',
    );
    $timeoffset = $timeoffset == 9999 ? $offset : $timeoffset;
    $timestamp += $timeoffset * 3600;
    switch ($format) {
        case 'dt':
            $format = $date_format;
            break;
        case 'd':
            $format = $day_format;
            break;
        case 't':
            $format = $time_format;
            break;
    }
    if ($format == 'u') {
        $todaytimestamp = $now - ($now + $timeoffset * 3600) % 86400 + $timeoffset * 3600;
        $s = gmdate(empty($custom_format) ? $date_format : $custom_format, $timestamp);
        $time = $now + $timeoffset * 3600 - $timestamp;
        if ($timestamp >= $todaytimestamp) {
            if ($time > 3600) {
                $return = '<span title="' . $s . '">' . intval($time / 3600) . $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) . $lang['min'] . $lang['before'] . '</span>';
            } elseif ($time > 0) {
                $return = '<span title="' . $s . '">' . $time . $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 . '">' . $lang['yday'] . gmdate($time_format, $timestamp) . '</span>';
            } elseif ($days == 1) {
                $return = '<span title="' . $s . '">' . $lang['byday'] . gmdate($time_format, $timestamp) . '</span>';
            } else {
                $return = '<span title="' . $s . '">' . ($days + 1) . $lang['day'] . $lang['before'] . '</span>';
            }
        } else {
            $return = $s;
        }
    } else {
        $return = gmdate($format, $timestamp);
    }
    return $return;
}