php - How do I get next month date from today's date and insert it in my database? -

i have 2 columns in db: start_date , end_date, both date types. code updating dates follows:

$today_date = date("y-m-d"); $end_date = date("y-m-d"); // date +1 month ??  $sql1 = "update `users` set `start_date` = '".$today_date."', `end_date` = '".$end_date."'  `users`.`id` ='".$id."' limit 1 ;"; 

what best way make $end_date equal $start_date + 1 month? example, 2000-10-01 become 2000-11-01.

you can use php's strtotime() function:

// 1 month today $date = date('y-m-d', strtotime('+1 month'));  // 1 month specific date $date = date('y-m-d', strtotime('+1 month', strtotime('2015-01-01'))); 

just note +1 month not calculated intuitively. appears add number of days exist in current month.

current date  | +1 month ----------------------------------------------------- 2015-01-01    | 2015-02-01   (+31 days) 2015-01-15    | 2015-02-15   (+31 days) 2015-01-30    | 2015-03-02   (+31 days, skips feb) 2015-01-31    | 2015-03-03   (+31 days, skips feb) 2015-02-15    | 2015-03-15   (+28 days) 2015-03-31    | 2015-05-01   (+31 days, skips april) 2015-12-31    | 2016-01-31   (+31 days) 

some other date/time intervals can use:

$date = date('y-m-d'); // initial date string use in calculation  $date = date('y-m-d', strtotime('+1 day', strtotime($date))); $date = date('y-m-d', strtotime('+1 week', strtotime($date))); $date = date('y-m-d', strtotime('+2 week', strtotime($date))); $date = date('y-m-d', strtotime('+1 month', strtotime($date))); $date = date('y-m-d', strtotime('+30 days', strtotime($date)));