current_user_on_membership function for membership 2

code.php

<?php

if( ! function_exists( 'current_user_on_membership' ) ) {
    function current_user_on_membership( $membership_id ) {
	$member = MS_Model_Member::get_current_member();
	$membership_items = $member->get_membership_ids();
	if( in_array( $membership_id, $membership_items ) ) {
	    return true;
	}
	return false;
    }
}