Credit card use in phill is rapidly changing i remeber only mastercard being accepted in many places in 04 by 05 visa was everywhere. But most from memory dont use chip and pin which is a good on the point of the bank covering any losses but not so good as its so easy to have someone misuse it.
Most stores do, now, have 'chip and pin', although it confuses the cashier when the machine requests pin entry. Even when a chip and pin system is used, most cashiers still ask you to sign the slip!