php.ini (for support)

I have changed some setting in php.ini recently and now even order is paid by paypal I get incomplete order status for every.

Changes were made to following

allow_url_include = Off

allow_url_fopen = Off

session.use_only_cookies = 1

session.cookie_httponly = 1

session.use_trans_sid = 0

expose_php = Off

display_errors = Off

register_globals = Off

enable_dl = Off

Would you tell me what of it is required by paypal?

Thank you