PHP 获取今日、昨日、本周、上周、本月的等等常用的起始时间戳和结束时间戳的时间处理类：

<?phpclass Time{ ???/** ????* 返回今日开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function today() ???{ ???????return [ ???????????mktime(0, 0, 0, date(‘m‘), date(‘d‘), date(‘Y‘)), ???????????mktime(23, 59, 59, date(‘m‘), date(‘d‘), date(‘Y‘)) ???????]; ???} ????/** ????* 返回昨日开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function yesterday() ???{ ???????$yesterday = date(‘d‘) - 1; ???????return [ ???????????mktime(0, 0, 0, date(‘m‘), $yesterday, date(‘Y‘)), ???????????mktime(23, 59, 59, date(‘m‘), $yesterday, date(‘Y‘)) ???????]; ???} ????/** ????* 返回本周开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function week() ???{ ???????$timestamp = time(); ???????return [ ???????????strtotime(date(‘Y-m-d‘, strtotime("this week Monday", $timestamp))), ???????????strtotime(date(‘Y-m-d‘, strtotime("this week Sunday", $timestamp))) + 24 * 3600 - 1 ???????]; ???} ????/** ????* 返回上周开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function lastWeek() ???{ ???????$timestamp = time(); ???????return [ ???????????strtotime(date(‘Y-m-d‘, strtotime("last week Monday", $timestamp))), ???????????strtotime(date(‘Y-m-d‘, strtotime("last week Sunday", $timestamp))) + 24 * 3600 - 1 ???????]; ???} ????/** ????* 返回本月开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function month($everyDay = false) ???{ ???????return [ ???????????mktime(0, 0, 0, date(‘m‘), 1, date(‘Y‘)), ???????????mktime(23, 59, 59, date(‘m‘), date(‘t‘), date(‘Y‘)) ???????]; ???} ????/** ????* 返回上个月开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function lastMonth() ???{ ???????$begin = mktime(0, 0, 0, date(‘m‘) - 1, 1, date(‘Y‘)); ???????$end = mktime(23, 59, 59, date(‘m‘) - 1, date(‘t‘, $begin), date(‘Y‘)); ????????return [$begin, $end]; ???} ????/** ????* 返回今年开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function year() ???{ ???????return [ ???????????mktime(0, 0, 0, 1, 1, date(‘Y‘)), ???????????mktime(23, 59, 59, 12, 31, date(‘Y‘)) ???????]; ???} ????/** ????* 返回去年开始和结束的时间戳 ????* ????* @return array ????*/ ???public static function lastYear() ???{ ???????$year = date(‘Y‘) - 1; ???????return [ ???????????mktime(0, 0, 0, 1, 1, $year), ???????????mktime(23, 59, 59, 12, 31, $year) ???????]; ???} ????public static function dayOf() ???{ ????} ????/** ????* 获取几天前零点到现在/昨日结束的时间戳 ????* ????* @param int $day 天数 ????* @param bool $now 返回现在或者昨天结束时间戳 ????* @return array ????*/ ???public static function dayToNow($day = 1, $now = true) ???{ ???????$end = time(); ???????if (!$now) { ???????????list($foo, $end) = self::yesterday(); ???????} ????????return [ ???????????mktime(0, 0, 0, date(‘m‘), date(‘d‘) - $day, date(‘Y‘)), ???????????$end ???????]; ???} ????/** ????* 返回几天前的时间戳 ????* ????* @param int $day ????* @return int ????*/ ???public static function daysAgo($day = 1) ???{ ???????$nowTime = time(); ???????return $nowTime - self::daysToSecond($day); ???} ????/** ????* 返回几天后的时间戳 ????* ????* @param int $day ????* @return int ????*/ ???public static function daysAfter($day = 1) ???{ ???????$nowTime = time(); ???????return $nowTime + self::daysToSecond($day); ???} ????/** ????* 天数转换成秒数 ????* ????* @param int $day ????* @return int ????*/ ???public static function daysToSecond($day = 1) ???{ ???????return $day * 86400; ???} ????/** ????* 周数转换成秒数 ????* ????* @param int $week ????* @return int ????*/ ???public static function weekToSecond($week = 1) ???{ ???????return self::daysToSecond() * 7 * $week; ???} ????private static function startTimeToEndTime() ???{ ????}} ?>