On Jul 6, 2005, at 3:59 PM, Richard Lynch wrote:
365.24 is an appoximation.
Sooner or later, it's gonna bit you in the butt.
If you want somebody's age accurately, you're probably going to have
to do
it the hard way.
Something like this might work:
<?php
$DOB = "1988-07-06";
$now = date('Y-m-d');
list($by, $bm, $bd) = explode('-', $DOB);
list($ny, $nm, $nd) = explode('-', $now);
$age = $ny - $by;
if ($age){
if ($bm < $nm){
// do nothing, they were born before this month
// so subtracting the years is correct
}
elseif ($nm < $bm){
$age--; //They were born in a later month, so not quite a year
yet
}
else{
//They were born this month. Count the days.
if ($bd < $nd){
//Do nothing. They were born before this date.
}
elseif ($nd < $bd){
$age--; //They were born later this month, so not quite a year
yet
}
else{
//It's their birthday! Go ahead and count it as a year,
//unless you want to futz with the hour of their birth...
}
}
}
if (!$age){
//Do whatever you want with children less than 1 year old...
//return it as "X months" or just call it "infant" or pretend
they're 1
//or whatever.
//Maybe even just use $age (which is 0) and call it done.
}
?>
Actually, I was thinking it could be done inside a simple formula since
his original "formula" works on the "leap" years, ie. years divisible
by four. I guess the trick would be figuring out the actual seconds in
a year and doing most of the calculations on the unix timestamp.
Something is tickling the back of my brain on this but I can't see it
just yet. Eh...
Edward Vermillion
evermillion@xxxxxxxxxxxx
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