Get preceding 12 month array, starting with 12 months earlier and ending in current month (ex. Today is Mar, so array will be Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Jan,Feb,Mar)

gistfile1.txt

$date = new DateTime((date('Y')-1).'-'.date('m').'-01' ); //to kill the 31 day problem
$months_array = array_map(function($val) use ($date) {return $date->add(new DateInterval('P1M'))->format('M');}, range(1,12));