support timestamps.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
add fresh time stamp.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
rewrite array function for php 5.3 testing.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
support timestamp for update_many function.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
convert php style and set flase of timestamp value as default.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
add updated_at function.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
update testing.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
update unit testing.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
unit testing for php 5.3

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Merge pull request #3 from appleboy/feature/timestamps

support timestamps.