Question

I am currently working on a package manager for my current project and I need to add package subscription date and package expiry date.

I am using php function date("Y-m-d H:i:s") i.e

$package_subscription_start_date = date("Y-m-d H:i:s");

now here is my requirement:
I need to have packages such as for 1 day, 2 days, 5 days, 1 week, 4 weeks, 12 weeks, 1 month, 6 months, 9 months, 1 year, 2 years, 5years and 10 years.

How is it possible for me to add these values and calculate the package expiry date for inserting into mysql, something like

$package_expiry_date = date("Y-m-d H:i:s") + 1 day;
$package_expiry_date = date("Y-m-d H:i:s") + 5 days;
$package_expiry_date = date("Y-m-d H:i:s") + 1 week;
$package_expiry_date = date("Y-m-d H:i:s") + 4 weeks;
$package_expiry_date = date("Y-m-d H:i:s") + 2 months;

$package_expiry_date = date("Y-m-d H:i:s") + 2 years;

Lastly I need to take care of other date issues like valid date and leap year etc.
Also I need this to be done at php level, not using mysql / sql query.

I will appreciate any help in this direction.

Answer 1

Have you tried the strtotime() command in php?

echo $expires = strtotime(date("Y-m-d H:i:s")." + 1 day");
echo date("Y-m-d H:i:s", $expires);

Gives you the output of

135082420020
12-10-21 08:56:40