Handling exception question

[Paul Czubilinski]

Hello,

I have code like this:

class MyException extends Exception {}

function x() {
try {
throw new MyException()
} catch (Exception $e) {
echo 'Exception catched';
exit;
}

try {
x();
} catch (MyException $e) {
echo 'MyException catched';
exit;
}



I cannot understand why this code catches Exception instead of
MyException? Can you please tell me what is wrong with it?

Best rgrds,
Paul

[Sjoerd]

Re: Handling exception question


Paul Czubilinski wrote:[color=blue]
> class MyException extends Exception {}[/color]

Since MyException extends Exception, MyException _is_ an Exception.
Therefore, catch (Exception $e) will catch it.

[Paul Czubilinski]

Re: Handling exception question

> Since MyException extends Exception, MyException _is_ an Exception.[color=blue]
> Therefore, catch (Exception $e) will catch it.[/color]

Ok, so how to make a different exceptions nested?

[Dikkie Dik]

Re: Handling exception question

> I have code like this:[color=blue]
>
> class MyException extends Exception {}
>
> function x() {
> try {
> throw new MyException()
> } catch (Exception $e) {
> echo 'Exception catched';
> exit;
> }
>
> try {
> x();
> } catch (MyException $e) {
> echo 'MyException catched';
> exit;
> }
>
>
>
> I cannot understand why this code catches Exception instead of
> MyException? Can you please tell me what is wrong with it?[/color]


There's nothing wrong with it. In function x you throw an exception (a
MyException to be exact) and catch it again, because you catch any
exception. So the function x does not throw an exception to the outside
world. If you want to catch specific exceptions, state them in the catch
part:

Try{...}
catch(SomeExcep tion $e){...}
catch(SomeOther Exception $se){...}

So you can use more than one catch. If you want to handle all
exceptions, but some specifically, state the specific ones first, and
the more generic ones below them.

Best regards

[Paul Czubilinski]

Re: Handling exception question

Thx, Ive got it :)