Subtract 5 Years

[billhobbs]

$newdate = (strtotime($birthdate)(- 5 Year)); echo $newdate;

I'm not sure how to do this but I have a date from a database that I need to subtract 5 years from and create a new session variable to compare to another value. Any help would be appreciated.

[bradgrafelman]

Pass [man]strtotime/man a string like:

2011-09-12 -5 Year

as the first parameter and it will return the newly computed time.

However, if the date is coming from the DB, why not just have the DB return the date minus 5 years? Why not SELECT the data that you want, rather than SELECT'ing the data you don't want and transforming it into what you do want?