I have two columns in my db: start_date
and end_date
, which are both DATE
types. My code is updating the dates as 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` = '".$end_date."' WHERE `users`.`id` ='".$id."' LIMIT 1 ;";
What is the best way to make $end_date
equal to $start_date
+ one month? For example, 2000-10-01 would become 2000-11-01.
date('Y-m-t', strtotime('+1 month'));
Use the MONTH() function to retrieve a month from a date/datetime/timestamp column in MySQL. This function takes only one argument – either an expression which returns a date/datetime/ timestamp value or the name of a date/datetime/timestamp column. (In our example, we use the start_date column of date data type).
$newDate = date('Y-m-d', strtotime('tomorrow')); echo $newDate; ?>
You can use PHP's strtotime() function:
// One month from today $date = date('Y-m-d', strtotime('+1 month')); // One month from a specific date $date = date('Y-m-d', strtotime('+1 month', strtotime('2015-01-01')));
Just note that +1 month
is not always calculated intuitively. It appears to always add the number of days that exist in the 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 that you can use:
$date = date('Y-m-d'); // Initial date string to 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)));
The accepted answer works only if you want exactly 31 days later. That means if you are using the date "2013-05-31" that you expect to not be in June which is not what I wanted.
If you want to have the next month, I suggest you to use the current year and month but keep using the 1st.
$date = date("Y-m-01"); $newdate = strtotime ( '+1 month' , strtotime ( $date ) ) ;
This way, you will be able to get the month and year of the next month without having a month skipped.
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