Subtract 1 Year

[euel]

Gud Pm!

Im trying to display a list of years (last year, current year and next year) with these simple code i made..

It displays the current and next year correctly except last year, which gives me "1970".

I don't get why it gives me that since may next year works properly..  :-\

 

$currentyear = date('Y');
$subtract_year = strtotime(date('Y', strtotime($currentyear)) . '-1 year');
$lastyear = date('Y', $subtract_year);
$addyear = strtotime(date('Y', strtotime($currentyear)) . '+1 year');
$newyear = date('Y', $addyear);
$year_array = array($lastyear, $currentyear, $newyear);
foreach($year_array as $year)
{
	echo "<option value='{$year}'>";
	echo $year;
	echo "</option>";
}

 

I'm not familiar with dates yet.. so i'm gonna read the manual while w8ting for your kind replies. 

[scootstah]

All you need is this:

$lastyear = date('Y', strtotime('-1 year'));

[euel]

thanks scootstah!

i also replaced my newyear with it.