How to calculate age from a year of birth?

[Divvy]

Hello guys,

How could I calculate an person's age if I have their year of birth?

Im trying this function:

function age_in_years() {
	global $postmeta;
	$year_of_birth = get_field( "date_of_birth",$modelID);
	$date1 = strval( $year_of_birth );
	$date2 = strval( date( 'yy') );
	$age = $date2 = $date1;
	return $age;
}

But is not working at all... what I am doing wrong?
Using this code:

<?php echo age_in_years();?>

Is getting this:

05/07/1992

Database screenshot: http://i.imgur.com/mjLrEQx.png


Waiting for your help, thanks

Thanks heaps
Tim

__________________
Added after 22 Hours 54 minutes:

Ok, a new try...

If I have this code to calculate age:

<?php echo date_diff(date_create('04-08-1967'), date_create('today'))->y; ?>

And If I have this one to get the birth date:

<?php echo get_field( "date_of_birth",$modelID); ?>

I need to replace the '04-08-1967' of 1st code with the 2nd code right?
But how can I do that? My php knowledge is very poor...

I tried:

<?php echo date_diff(date_create('get_field( "date_of_birth",$modelID);'), date_create('today'))->y; ?>

But without success... Im doing something wrong... help

Thanks!!

 

[wideawake]

This should accomplish what you are trying to do:

<?php 
$age = get_field("date_of_birth",$modelID);

echo date_diff($age, date_create('today'))->y; 
?>

 

[mOrfiUs]

HI. there are a lot of samples in github
Greetings!!

 

[PerfectWeb]

indeed you can use php's date diff functions to get the difference