strtotime('now')2024/04/23 03:59:16
strtotime('+2 day')2024/04/25 03:59:16
strtotime('2 day')2024/04/25 03:59:16
strtotime('-2 day')2024/04/21 03:59:16
strtotime('2015/08/01')2015/08/01 00:00:00
strtotime('2039/08/01')2039/08/01 00:00:00
strtotime('yesterday')2024/04/22 00:00:00
strtotime('tomorrow')2024/04/24 00:00:00
strtotime('yesterday 09:00:00')2024/04/22 09:00:00
strtotime('+3 week')2024/05/14 03:59:16
strtotime('-3 week')2024/04/02 03:59:16
strtotime('next sunday')2024/04/28 00:00:00
strtotime('next sun')2024/04/28 00:00:00
strtotime('last sunday')2024/04/21 00:00:00
strtotime('+4 sunday')2024/05/19 03:59:16
strtotime('first sun of 2015-08')2015/08/02 00:00:00
strtotime('last sun of 2015-08')2015/08/30 00:00:00
strtotime('last sun of 2039-08')2039/08/28 00:00:00
strtotime('+2 month')2024/06/23 03:59:16
strtotime('-2 month')2024/02/23 03:59:16
strtotime('2015/08/01 +1 month')2015/09/01 00:00:00
strtotime('+1 month', strtotime('2015/08/01'))2015/09/01 00:00:00
strtotime('2015/08/31 +1 month')2015/10/01 00:00:00
strtotime('2015-08 +1 month')2015/09/01 00:00:00
strtotime('2039-08 +1 month')2039/09/01 00:00:00
strtotime('first day of 2015/08/12')2015/08/01 00:00:00
strtotime('first day of', strtotime('2015/08/12'))2015/08/01 00:00:00
strtotime('last day of 2015/08/12')2015/08/31 00:00:00
strtotime('last day of next month')2024/05/31 03:59:16
strtotime('+1 year')2025/04/23 03:59:16
strtotime('-1 year')2023/04/23 03:59:16
strtotime('-1 year 13:23:33')2023/04/23 13:23:33
strtotime('2015/01/01 -1 year')2014/01/01 00:00:00
strtotime('-1 year', strtotime('2015/01/01'))2014/01/01 00:00:00
strtotime('+2 hour')2024/04/23 05:59:16
strtotime('+4 min')2024/04/23 04:03:16
strtotime('+6 sec')2024/04/23 03:59:22
strtotime('now') - strtotime('today')...今日の 0時からの秒数14356
strtotime('now') - strtotime('today 10:00:00')...今日の10時からの秒数-21644