Promote warnings to Error in SNMP extension

[Girgias]

No description provided.

[kocsismate]

Is there an existing function instead of zval_get_long() which behaves more consistently with usual ZPP rules? E.g. won't return 0 or 1 in case of an array new_zval, depending on if it is empty or not. :D

otherwise, I would say something like Property SNMP::$max_oids must be greater than 0. AFAIR, null is neither mentioned explicitly in case of nullable parameters in similar situations (e.g. shm_attach()).

[Girgias]

I don't think there is, but NULL is handled explicitly above, and as this is a property hook I have no clue about a better approach for handling the type.

[nikic]

This looks okay to me, but possibly lowercase null would be more common now?

[nikic]

This looks okay to me, but possibly lowercase null would be more common now?

[nikic]

Here again, some of these var_dumps should be outside the try/catch.