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<?php $prevYear = date("Y", strtotime("01-02-2013 -1 year")); $nextYear = date("Y", strtotime("2013 +1 year")); var_dump($prevYear);
Output for 5.1.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(4) "2012"
Output for 5.1.0 - 5.1.2
string(4) "1970"
Output for 4.3.0 - 5.0.5
string(4) "2005"