I have searched for this but did not find a perfect function in php. I want to get a php function that calculate person age only in months.
For example:
less then one month old.
5 months old.
340 months old.
Thanks
views:
77answers:
3
A:
If you want years to months, where the person inputs their ages as $years
$month = $years*12;
If you want months to years, where the person inputs their age as $months
$year = $months/12
ina
2010-07-24 09:17:14
This is not completely accurate, considering the fact that the months aren't distributed evenly (28, 29, 30, 31 days per month).
kander
2010-07-24 09:24:39
Also, if a person is born in January and now is July, the computation would be wrong by 7 months.
klez
2010-07-24 09:42:36
not if you assume $years can be input as a decimal.. e.g. 1.5 years etc
ina
2010-07-24 10:42:42
+4
A:
Using PHP's DateInterval (available from 5.3.0), that's pretty easy:
$birthday = new DateTime('1990-10-13');
$diff = $birthday->diff(new DateTime());
$months = $diff->format('%m') + 12 * $diff->format('%y');
Now $months will contain the number of months I've lived.
Daniel Egeberg
2010-07-24 09:21:49
Is there a specific reason to use $diff->format() over accessing the y and m properties of the DateInterval directly?
kander
2010-07-24 09:23:10
I don't see any mention of those properties in the documentation. Using undocumented features is generally a bad idea as they are more likely to change in the future.
Ruben
2010-07-24 10:51:39
Daniel Egeberg
2010-07-24 12:05:09
+1
A:
$birthday = new DateTime("June 21st 1986");
$diff = $birthday->diff(new DateTime());
$months = ($diff->y * 12) + $diff->m;
var_dump($months);
Something along these lines?
kander
2010-07-24 09:22:13