php function returns array with the n next years, current year and n previous years

nextAndPreviousYears.php

<?php 

    /**
     * 
     * returns array with the next ($next*)years, current year and previous (previous*)years
     * return as int 
     * (except for current, needs to change)
     * 
     */    
        public function getNextAndPreviousYears($current,$next = null,$previous = null){
            $years = array();
            for($j=$previous;$j>=1;$j--){
                $new = date('Y', strtotime('-'.$j.' year'));
                array_push($years,$new);
            }
            array_push($years,$current);
            for($i=1;$i<=$next;$i++){
                $new = date('Y', strtotime('+'.$i.' year'));
                array_push($years,$new);
            }
            return $years;
        }