Re: error handling in pecl extensions (was Re: intl/resourcebundle)

On Sun, 20 Dec 2009, Hans-Peter Oeri wrote: > As stas pointed out to me, intl does not use exceptions for error > handling. As a matter of fact, there seems to be a completely separate > "error handling" within intl. Yes, unfortunately :/ > Unfortunately, I didn't find any "best practices" or "agreements" on > how > error conditions in pecl extensions should be handled. For me - in my > newbie ignorance -, using neither extensions nor the classic error > handling seems illogical. It forces the user to recreate specific error > handling - as it does not use the "available" tools. > > Is there any documentation that would help me understand that decision? Not that I know of, but there are a few things that should be kept in mind: - Nothing internally in PHP throws exceptions by default - Functions should not throw notices and warnings at random, but instead should return their status, in combination with functions to retrieve more elaborate error messages/statusses. - Constructors should throw exceptions, because there is no other way of returning error information. > Was there any discussion on allowing classic php_errors and/or > exceptions by ini configuration? > > Would there probably be a need for a inter-extension ini indicating to > extensions, if php_errors and/or exceptions are wanted by the user? We've discussed this before I think—the general idea is that we definitely do *not* want INI settings that change this sort of behavior as they remove control over error reporting/handling from the developers. The PDO extension allows as an option to the objects to use a specific kind of error handling. regards, Derick -- http://derickrethans.nl | http://ezcomponents.org | http://xdebug.org twitter: @derickr