This is how it works (in very crude not-even-pseudo code, but I'm sure
you'll be able to follow the logic!):
BEGIN
1. Browser requests a resource (file) from your web server.
2. Web server checks to see whether requested resource exists.
3. if (!2) web server generates 404 error (page does not exist) & your user
is redirected to your custom error screen. Goto END
4. else send requested resource to browser: if it's an HTML file it is sent
as-is. Goto END.
5. If it's a php script, send it to the php interpreter to execute.
6. If script is error-free, send result to web server to forward on to
browser. Everything AOK. Goto END.
7. Else Error handler does whatever you want it to. In this case, redirect
to the same page as in (3) (as well as possibly sending you an email,
logging to a file, etc.)
END
By default step 7 would be printing an error to the browser, which is what I
assume you don't want. If someone requests a php file that does not exist,
they will get a 404 error since that url does not exist and you won't even
get as far running any script at all!
"Tim Ward" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> thanks to Mahmoud for trying to help, but the php error trapping functions
> rely on the engine being able to auto-prepend the error trapping script. I
> tried a solution like this ...
> <?php
> if (!file_exists($PATH_TRANSLATED))
> { include("$DOCUMENT_ROOT/error.html");
> exit;
> }
> ?>
>
> but it doesn't prepend to scripts that don't exist. I did some diagnostics
> (e.g. replacing $PATH_TRANSLATED with a hard coded non-existant file name)
> to confirm it was working for files that do exist.
>
> Any ideas on how to get around this?
>
> Tim Ward
> Senior Systems Engineer
>
> Please refer to the following disclaimer in respect of this message:
> http://www.stivesdirect.com/e-mail-disclaimer.html
>
>
> > -----Original Message-----
> > From: Mahmoud Abu-Wardeh [SMTP:[EMAIL PROTECTED]]
> > Sent: 03 September 2001 18:01
> > To: [EMAIL PROTECTED]
> > Subject: Re: Error trapping
> >
> > Try writing a custom error handler. Chech out
> > http://www.zend.com/zend/spotlight/error.php for a good article on the
> > subject. Pay particular attention to the bit at the end about output
> > buffering since I assume that what you would want to do is send a
redirect
> > header to the browser if the script fails to work.
> >
> > "Tim Ward" <[EMAIL PROTECTED]> wrote
> > > I've gone an annoying problem. On our site I've trapped "file does not
> > > exist" errors at Apache level to send out my own error screen with a
> > company
> > > logo, link to home page and a mailto link, but this doesn't work for
any
> > > request for a page that would be parsed by php if it existed. In this
> > case
> > a
> > > valid html page (containing the php error) is returned. The problem
> > seems
> > to
> > > be that as far as Apache is concerned there isn't an error. I haven't
> > found
> > > anything in php that allows me to trap errors like this. Error
reporting
> > > levels aren't helpful as I still need the error trapped.
> > >
> > > I'm sure I'm not the first person who has come across this, and I'm
> > hoping
> > > someone out there has found a way around it.
> > >
> > > I'm running PHP 4.0.0, Apache 1.3 on NT (yes I know, but our network
> > manager
> > > has promised me a linux box)
> > >
> > > Tim Ward
> > > Senior Systems Engineer
> > >
> > > Please refer to the following disclaimer in respect of this message:
> > > http://www.stivesdirect.com/e-mail-disclaimer.html
> > >
> > >
> >
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