PHP Function to Calculate Age From Date of Birth

There are several times when you need to display the age of the user on your website. There are two ways to do that:

  1. Add Date of Birth column as well as age column.
  2. Display age from the Date of Birth.

Taking both the field from the user doesn’t seems to be good enough, so what to do ?

Just add the following function and you get the age of the user from the Date of Birth.

function get_age($birth_date)
    return floor((time() - strtotime($birth_date))/31556926);
echo "I am ".get_age("1989-10-21") ." years old";


I am 23 years old.

You need to write Date of Birth in yyyy-mm-dd format which is the default database date format.