PHP: How to calculate a person’s age in months + days?

Question

I want to calculate a person’s age in months plus days using the date of birth (example: 1986-08-23).

For example:

0 months and 25 days old. 5 months and 20 days old. 150 months and 4 days old. 285 months and 30 days old. 

Any idea? Thanks.

Answer 1

 $date = new DateTime('1990-10-13'); $diff = $date->diff(new DateTime()); printf("%d months and %d days old", $diff->y*12 + $diff->m, $diff->d); 

Note that DateTime::diff() requires PHP 5.3.0 or later.