title: date() only year from date format YYYY-00-00
body: <p>I try to do this <code>echo date("Y", strtotime("1999-00-00"));</code> but instead of <code>1999</code> it returns <code>1998</code>. Is there a way how to handle this? I would prefer a "clean way", not something like <code>$finalYear = (float)$year+1</code> etc.
  The date format MUST be <code>YYYY-00-00</code> (with zeros)</p>