Posted by Jochem Maas on 08/05/05 15:26

Dear Internals,

class FooBar { public function foo() throws Exception {} }
function fooFoo() throws Exception {}

this came up on php-generals and I wondered if anyone had time/cared
to comment if it (as it does to me) seems like a good idea and/or whether it is
technically feasable. My thinking was that one could then use the reflection API
to determine whether functions/methods are capable of throwing exceptions and or
what kind - might be quite handy when using third party apps/classes
(PEAR springs to mind.)

thanks and regards,
Jochem


<the rest is blabla aimed at php-generals>

Torgny Bjers wrote:
> Norbert Wenzel wrote:
>
>>If there is a class with a function, that might throw exceptions and
>>does NOT catch them, may I write that like in Java?
>>
>>class FooClass {
>>
>> public function foo() throws Exception {

think about this, especially in terms of the Reflection API, it sounds
like a really good idea (at least to me)

>>
>> }
>>
>>}
>>
>>Or is there another possibility to tell a function throws an exception
>>and to force the caller to handle that exception?
>>
>>thanks in advance,
>>
>>Norbert
>>
>
>
> Hello Norbert,
>
> The Java way doesn't work here. The best approach would be to simply run
> a try/catch/finally around the call to your function/method, and inside
> the function itself you do the following:
>
> if (...) { throw new Exception("My message."); } }
>

indeed - bottom line is you have to know that a function/method/extension may
throw. mostly you do know because:

1. you wrote the code,
2. or it's documented in the extension manual pages
3. and/ro you hit an unacaught exception whilst developing.

my approach to cover any oversights is to wrap every thing in a main try/catch block
just in case - keeping in mind that the idea is that this 'main' catch block is never run
is al goes well.

> Regards,
> Torgny
>

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