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- <?php
-
- namespace fast;
-
- use DateTime;
- use DateTimeZone;
-
- /**
- * 日期时间处理类
- */
- class Date
- {
- const YEAR = 31536000;
- const MONTH = 2592000;
- const WEEK = 604800;
- const DAY = 86400;
- const HOUR = 3600;
- const MINUTE = 60;
-
- /**
- * 计算两个时区间相差的时长,单位为秒
- *
- * $seconds = self::offset('America/Chicago', 'GMT');
- *
- * [!!] A list of time zones that PHP supports can be found at
- * <http://php.net/timezones>.
- *
- * @param string $remote timezone that to find the offset of
- * @param string $local timezone used as the baseline
- * @param mixed $now UNIX timestamp or date string
- * @return integer
- */
- public static function offset($remote, $local = null, $now = null)
- {
- if ($local === null) {
- // Use the default timezone
- $local = date_default_timezone_get();
- }
- if (is_int($now)) {
- // Convert the timestamp into a string
- $now = date(DateTime::RFC2822, $now);
- }
- // Create timezone objects
- $zone_remote = new DateTimeZone($remote);
- $zone_local = new DateTimeZone($local);
- // Create date objects from timezones
- $time_remote = new DateTime($now, $zone_remote);
- $time_local = new DateTime($now, $zone_local);
- // Find the offset
- $offset = $zone_remote->getOffset($time_remote) - $zone_local->getOffset($time_local);
- return $offset;
- }
-
- /**
- * 计算两个时间戳之间相差的时间
- *
- * $span = self::span(60, 182, 'minutes,seconds'); // array('minutes' => 2, 'seconds' => 2)
- * $span = self::span(60, 182, 'minutes'); // 2
- *
- * @param int $remote timestamp to find the span of
- * @param int $local timestamp to use as the baseline
- * @param string $output formatting string
- * @return string when only a single output is requested
- * @return array associative list of all outputs requested
- * @from https://github.com/kohana/ohanzee-helpers/blob/master/src/Date.php
- */
- public static function span($remote, $local = null, $output = 'years,months,weeks,days,hours,minutes,seconds')
- {
- // Normalize output
- $output = trim(strtolower((string)$output));
- if (!$output) {
- // Invalid output
- return false;
- }
- // Array with the output formats
- $output = preg_split('/[^a-z]+/', $output);
- // Convert the list of outputs to an associative array
- $output = array_combine($output, array_fill(0, count($output), 0));
- // Make the output values into keys
- extract(array_flip($output), EXTR_SKIP);
- if ($local === null) {
- // Calculate the span from the current time
- $local = time();
- }
- // Calculate timespan (seconds)
- $timespan = abs($remote - $local);
- if (isset($output['years'])) {
- $timespan -= self::YEAR * ($output['years'] = (int)floor($timespan / self::YEAR));
- }
- if (isset($output['months'])) {
- $timespan -= self::MONTH * ($output['months'] = (int)floor($timespan / self::MONTH));
- }
- if (isset($output['weeks'])) {
- $timespan -= self::WEEK * ($output['weeks'] = (int)floor($timespan / self::WEEK));
- }
- if (isset($output['days'])) {
- $timespan -= self::DAY * ($output['days'] = (int)floor($timespan / self::DAY));
- }
- if (isset($output['hours'])) {
- $timespan -= self::HOUR * ($output['hours'] = (int)floor($timespan / self::HOUR));
- }
- if (isset($output['minutes'])) {
- $timespan -= self::MINUTE * ($output['minutes'] = (int)floor($timespan / self::MINUTE));
- }
- // Seconds ago, 1
- if (isset($output['seconds'])) {
- $output['seconds'] = $timespan;
- }
- if (count($output) === 1) {
- // Only a single output was requested, return it
- return array_pop($output);
- }
- // Return array
- return $output;
- }
-
- /**
- * 格式化 UNIX 时间戳为人易读的字符串
- *
- * @param int Unix 时间戳
- * @param mixed $local 本地时间
- *
- * @return string 格式化的日期字符串
- */
- public static function human($remote, $local = null)
- {
- $timediff = (is_null($local) || $local ? time() : $local) - $remote;
- $chunks = array(
- array(60 * 60 * 24 * 365, 'year'),
- array(60 * 60 * 24 * 30, 'month'),
- array(60 * 60 * 24 * 7, 'week'),
- array(60 * 60 * 24, 'day'),
- array(60 * 60, 'hour'),
- array(60, 'minute'),
- array(1, 'second')
- );
-
- for ($i = 0, $j = count($chunks); $i < $j; $i++) {
- $seconds = $chunks[$i][0];
- $name = $chunks[$i][1];
- if (($count = floor($timediff / $seconds)) != 0) {
- break;
- }
- }
- return __("%d {$name}%s ago", $count, ($count > 1 ? 's' : ''));
- }
-
- /**
- * 获取一个基于时间偏移的Unix时间戳
- *
- * @param string $type 时间类型,默认为day,可选minute,hour,day,week,month,quarter,year
- * @param int $offset 时间偏移量 默认为0,正数表示当前type之后,负数表示当前type之前
- * @param string $position 时间的开始或结束,默认为begin,可选前(begin,start,first,front),end
- * @param int $year 基准年,默认为null,即以当前年为基准
- * @param int $month 基准月,默认为null,即以当前月为基准
- * @param int $day 基准天,默认为null,即以当前天为基准
- * @param int $hour 基准小时,默认为null,即以当前年小时基准
- * @param int $minute 基准分钟,默认为null,即以当前分钟为基准
- * @return int 处理后的Unix时间戳
- */
- public static function unixtime($type = 'day', $offset = 0, $position = 'begin', $year = null, $month = null, $day = null, $hour = null, $minute = null)
- {
- $year = is_null($year) ? date('Y') : $year;
- $month = is_null($month) ? date('m') : $month;
- $day = is_null($day) ? date('d') : $day;
- $hour = is_null($hour) ? date('H') : $hour;
- $minute = is_null($minute) ? date('i') : $minute;
- $position = in_array($position, array('begin', 'start', 'first', 'front'));
-
- switch ($type) {
- case 'minute':
- $time = $position ? mktime($hour, $minute + $offset, 0, $month, $day, $year) : mktime($hour, $minute + $offset, 59, $month, $day, $year);
- break;
- case 'hour':
- $time = $position ? mktime($hour + $offset, 0, 0, $month, $day, $year) : mktime($hour + $offset, 59, 59, $month, $day, $year);
- break;
- case 'day':
- $time = $position ? mktime(0, 0, 0, $month, $day + $offset, $year) : mktime(23, 59, 59, $month, $day + $offset, $year);
- break;
- case 'week':
- $time = $position ?
- mktime(0, 0, 0, $month, $day - date("w", mktime(0, 0, 0, $month, $day, $year)) + 1 - 7 * (-$offset), $year) :
- mktime(23, 59, 59, $month, $day - date("w", mktime(0, 0, 0, $month, $day, $year)) + 7 - 7 * (-$offset), $year);
- break;
- case 'month':
- $time = $position ? mktime(0, 0, 0, $month + $offset, 1, $year) : mktime(23, 59, 59, $month + $offset, cal_days_in_month(CAL_GREGORIAN, $month + $offset, $year), $year);
- break;
- case 'quarter':
- $time = $position ?
- mktime(0, 0, 0, 1 + ((ceil(date('n', mktime(0, 0, 0, $month, $day, $year)) / 3) + $offset) - 1) * 3, 1, $year) :
- mktime(23, 59, 59, (ceil(date('n', mktime(0, 0, 0, $month, $day, $year)) / 3) + $offset) * 3, cal_days_in_month(CAL_GREGORIAN, (ceil(date('n', mktime(0, 0, 0, $month, $day, $year)) / 3) + $offset) * 3, $year), $year);
- break;
- case 'year':
- $time = $position ? mktime(0, 0, 0, 1, 1, $year + $offset) : mktime(23, 59, 59, 12, 31, $year + $offset);
- break;
- default:
- $time = mktime($hour, $minute, 0, $month, $day, $year);
- break;
- }
- return $time;
- }
- }
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