Current age is not calculated correctly

[FireSpike0]

ldap-web shows the current age of a person in its birthday view. The value is calculated using a users set birthday.
This age value is not calculated correctly. The behavior is especially visible if you look at birthday list on a persons birthday (or one day before a persons birthday): The person is already x.02 years old, even though the persons birthday is today (or even tomorrow, in which case the person shouldn't be already x.02 years old, if the persons x-th birthday begins tomorrow).