Re: [studs-user] NULL values causing blank pages.

[Dan A. <dan...@gm...>]

Ryan,

This is a known issue, though it doesn't always occur in all cases.=20
It depends on where the null reference shows up.

Studs works by intercepting the error handling of PHP with a custom
error handler.  It also uses output buffering to catch errors that are
not normally reported.  I have it on the TODO list to reconcile this
situation so that the error does make it all the way out.  I will make
it part of the sample application to handle this case.

As a general work around though, it is a very good idea to do null
checks and proper unit testing, because nulls are a very difficult
problem to deal with when they start happening.  The same goes for
java as well.  A null pointer exception can deliver almost no
information.

Short answer, yes it is known and yes I am looking for a nice solution.

/dan

On 8/31/05, Ryan Green <ry...@me...> wrote:
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> Hello all,=20
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> I'm a new user of studs and a novice php coder. =20
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> In the process of building our site, there are a number of instances wher=
e
> an unchecked null value seems to wreak havoc on my pages.  Seems the erro=
r
> somehow destroys the request data and the browser won't display the page.=
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> In Mozilla, my page just doesn't change, or returns blank.  In IE, I rece=
ive
> a cannot display page error.=20
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> Usually, if I'm able to track down the error via php logs, the error will=
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> "Call to a member function on a non-object."=20
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> Anyway, has anyone run into this same sort of problem.  It often makes
> debugging very difficult when I don't receive an error.  Is the expected
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> Regards,=20
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> Ryan=20
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> Ryan Green=20
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> Media Greenhouse=20
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> 970 581 9899=20
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> aolim ryang8880=20
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> http://www.mediagreenhouse.com=20
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>  =20


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