PHP gets today, yesterday, this week, last week, this month, and so on. Common start timestamp and end timestamp time processing class:

<?PHPclass  Time{    /** * Returns the timestamp of the start and end of today * * @return Array*/     Public Static functiontoday () {return [            Mktime(0, 0, 0,Date(' m '),Date(' d '),Date(' Y ')),Mktime(23, 59, 59,Date(' m '),Date(' d '),Date(' Y '))        ]; }     /** * Returns the timestamp of the start and end of yesterday * * @return Array*/     Public Static functionyesterday () {$yesterday=Date(' d ')-1; return [            Mktime(0, 0, 0,Date(' m '),$yesterday,Date(' Y ')),Mktime(23, 59, 59,Date(' m '),$yesterday,Date(' Y '))        ]; }     /** * Returns the timestamp of the start and end of the week * * @return Array*/     Public Static functionWeek () {$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        ]; }     /** * return last week start and end timestamp * * @return array*/     Public Static functionLastweek () {$timestamp= Time(); return [            Strtotime(Date(' y-m-d ',Strtotime("Last week Monday",$timestamp))),Strtotime(Date(' y-m-d ',Strtotime("Last week Sunday",$timestamp)) + 24 * 3600-1        ]; }     /** * returns the start and end timestamp of the month * * @return Array*/     Public Static functionMonth$everyDay=false)    {        return [            Mktime(0, 0, 0,Date(' m '), 1,Date(' Y ')),Mktime(23, 59, 59,Date(' m '),Date(' t '),Date(' Y '))        ]; }     /** * Returns the timestamp of the beginning and end of the month * * @return Array*/     Public Static functionLastmonth () {$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]; }     /** * returns the start and end timestamp of the year * * @return array*/     Public Static functionYear () {return [            Mktime(0, 0, 0, 1, 1,Date(' Y ')),Mktime(23, 59, 59, 12, 31,Date(' Y '))        ]; }     /** * Returns the timestamp of the beginning and end of last year * * @return array*/     Public Static functionLastYear () {$year=Date(' Y ')-1; return [            Mktime(0, 0, 0, 1, 1,$year),Mktime(23, 59, 59, 12, 31,$year)        ]; }      Public Static functiondayof () {}/** * Get a few days before 0 to now/end of yesterday timestamp * * @param int $day days * @param bool $now return now or yesterday end timestamp * @return Array */     Public Static functionDaytonow ($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        ]; }     /** * Returns the timestamp of a few days ago * * @param int $day * @return int*/     Public Static functionDaysago ($day= 1)    {        $nowTime= Time(); return $nowTime-Self::d aystosecond ($day); }     /** * returns timestamp after a few days * * @param int $day * @return int*/     Public Static functionDaysafter ($day= 1)    {        $nowTime= Time(); return $nowTime+ Self::d aystosecond ($day); }     /** * Number of days converted to seconds * * @param int $day * @return int*/     Public Static functionDaystosecond ($day= 1)    {        return $day* 86400; }     /** * number of weeks converted to seconds * * @param int $week * @return int*/     Public Static functionWeektosecond ($week= 1)    {        returnSelf::d aystosecond () * 7 *$week; }     Private Static functionstarttimetoendtime () {}}?>

PHP gets today, yesterday, this week, last week, this month, and so on. Common start timestamp and end timestamp time processing class: