How to get previous year using PHP

Question

How am I able to get the value of the previous year using PHP. Are there any predefined functions for it?

Answer 1

There are many ways, you can either take away the amount of seconds in a year from time() like so:

$prevYear = date('Y', time() - 60*60*24*365 );

Or if you'd prefer, use the PHPs clever strtotime() function:

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

Or even like others have said, if it's from todays year just do date('Y') -1

Answer 2

function affffdate($vardate,$added)
{
$data = explode("-", $vardate);
$date = new DateTime();            
$date->setDate($data[0], $data[1], $data[2]);
$date->modify("".$added."");
$day= $date->format("Y-m-d");
return $day;    
}

echo "Example : " . affffdate("2010-08-01","-1 year");

Answer 3

Shortest approach:

$lastYear = (int)date("Y") - 1;