Harper has conceded just once in the two games that he has played since joining the Championship side on loan.
He told the Daily Mirror: “If I could speak to a young Steve Harper 10 years ago, I would have told him to go on loan then.
“I hadn’t played a competitive game for about six months before coming to Brighton so it was nice to blow the cobwebs out.
“I didn’t want to do nothing for the last years of my career. I could be here until January, the longer the better.”