PHP How to min or plus year with timespan

Question

I wanna ask, how to min or plus a year in php I have a date like this 1992-09-10 then I'm using timespan (codeigniter library) to knowing, how long the date is,

here's the code

$time = '1992-09-10';
$timeago = timespan(strtotime($time));

echo $timeago;

then the result is

24 Years, 1 Month, 3 Weeks, 2 Days, 23 Hours, 51 Minutes

and I want to decrease (-5) years the result should be

19 Years, 1 Month, 3 Weeks, 2 Days, 23 Hours, 51 Minutes

my code is

$time = '1992-09-10';
$timeago = timespan(strtotime('-5 years', strtotime($time)));

echo $timeago;

but the result is

29 Years, 1 Month, 3 Weeks, 3 Days, 17 Hours, 54 Minutes

anyone know to make it?

Sorry for my bad english

timespan is a personal function you have created ? Does it take in paramater only string like this "YYYY-MM-DD" ? — Daniel E., Nov 03 '16 at 08:34
Possible duplicate of http://stackoverflow.com/questions/5212240/add-one-year-to-datetime-with-php — nvkrj, Nov 03 '16 at 08:39

roberto06 · Accepted Answer · 2016-11-03T08:45:05.140

1

The result you get is perfectly normal : 1992 - 5 years equals 1987, which is indeed 29 years ago.

Just use +5 years instead :

$time = '1992-09-10';
$timeago = timespan(strtotime('+5 years', strtotime($time)));

echo $timeago;
// 19 Years, 1 Month, 4 Weeks, 1 Day, 38 Minutes

edited Nov 03 '16 at 08:45

answered Nov 03 '16 at 08:40

roberto06

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@yuliantosaparudin You could also reverse the order of your parameters in the `timespan` function : `$timeago = timespan(strtotime($time), strtotime('-5 years'));` – roberto06 Nov 03 '16 at 08:47
Haha, no problem. Keep in mind that the results might be slightly different though, as there might not be the same number of leap years between `1992` and `2011` than between `1997` and `2016`. – roberto06 Nov 03 '16 at 08:56

PHP How to min or plus year with timespan

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