■ PHP date format (DateTime::format) 날짜 포맷 ■ 사용법 $tmp_date = date_create('20210701235959'); $new_date1 = $tmp_date->format('Y-m-d H:i:s'); $new_date2 = $tmp_date->format('Y-m-d'); echo $new_date1;//2021-07-01 23:59:59 echo $new_date2;//2021-07-01 ■ 참고 https://www.php.net/manual/en/datetime.format.php