[UPHPU] Why doesn't this work the way I expect it to?

[Mac Newbold]

Today at 8:32am, Nathan Lane said:

> I have a default PHP script in all of my directories and I want them to
> redirect to my error script with some post parameters, or even variables,
> and I've tried both but neither seems to do what I expect it to.
>
> <?php
> $contents = "error";
> $errorNumber = 403;
> $errorMessage = "Access Forbidden";
> header("Location: /?page=error");
> ?>
>
> After that script is run I expect the script associated with /?page=error to
> see that $errorNumber and $errorMessage are set, but it doesn't see that.
> Can anybody explain why?

When you call header("Location: ...") it is going to send that back to the 
browser, which will start a new HTTP request to grab that new location. So 
the variables you're setting won't be visible in that new request unless 
they're part of the session or something.

If you want to set up some variables then load an error page, you might 
consider doing it with an include() or a require() instead of a location 
header to redirect it. The include/require method will also be faster 
since it skips at least one additional round trip for the user.

Thanks,
Mac

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