[RESOLVED] Incorrect path using $_SERVER['DOCUMENT_ROOT']

HeidiR

I recently moved to a new hosting provider and noticed intermittent errors in my php program as a direct result of $_SERVER['DOCUMENT_ROOT'] returning the incorrect path. Instead of returning the path of the current php script, it returns the parent path. As previously mentioned, this behavior was intermittent and was not easily reproduced. After Googling around and doing a lot of testing, it appears that this behavior may be related to my new hosts server config. Specifically, when an "Alias" has been used to map different parts of the file system. I believe I corrected the problem by replacing:

$_SERVER['DOCUMENT_ROOT']

with

substr(FILE, 0, strrpos(FILE, "/"))

Has anyone run across this issue?

bradgrafelman

HeidiR wrote:
Instead of returning the path of the current php script, it returns the parent path.

$_SERVER['DOCUMENT_ROOT'] isn't supposed to return the "path of the current php script."

dalecosp

AFAIK, $_SERVER['DOCUMENT_ROOT'] is totally dependent upon the HTTP server config file. What about ['SCRIPT_FILENAME'] and [man]realpath/man? Sorry I don't know exactly how to duplicate your issue.

HeidiR

dalecosp;10968315 wrote:
AFAIK, $_SERVER['DOCUMENT_ROOT'] is totally dependent upon the HTTP server config file. What about ['SCRIPT_FILENAME'] and [man]realpath/man? Sorry I don't know exactly how to duplicate your issue.

Thanks for the info. Yes, ['SCRIPT_FILENAME'] also corrects the problem. However, I was not able to confirm whether realpath() works.

dalecosp

Haven't checked again ... seems like the docs for realpath() stated you'd need permission. On a shared server (or running as Apache/WWW/httpd user), that's not likely. Glad the other's working for ya, though.

Welcome to PHPBuilder, btw 🙂

HeidiR

HeidiR;10968322 wrote:
Thanks for the info. Yes, ['SCRIPT_FILENAME'] also corrects the problem. However, I was not able to confirm whether realpath() works.

Was able to trap the error again and confirm that realpath() also works correctly.