Parsing $_SERVER array problem

[CPD]

I can't parse $_SERVER when using the alphabetic key instead of the numeric
index of the array. Below is some of the line-numbered code, followed by
the corresponding output. For this posting, IP address and domains shown
are fictitious. Note how the REMOTE_HOST is resolved by gethostbyaddr()
using a hard-coded IP address or the array index "10", but it fails
completely when the literal key REMOTE_ADDR is used.

Any help with this will be greatly appreciated. Thanks!

Here is the numbered PHP code fragment:

1 echo "REMOTE_ADD R direct : ". $_SERVER['REMOTE_ADDR'] . "<br>\n";
2 echo "REMOTE_HOS T by var name: ". gethostbyaddr($ _SERVER['REMOTE_ADDR']) .
"<br>\n";
3 echo "REMOTE_HOS T hard-coded : ". gethostbyaddr(' 20.1.22.40') . "<br>\n";
4 echo "REMOTE_HOS T by index 9 : ". gethostbyaddr($ _SERVER[10]) . "<br>\n";
5 while ( list( $key, $val ) = each( $_SERVER ) ) { echo " $key => $val
<br>\n"; }

Here is the corresponding output, with notes in square brackets:

1 REMOTE_ADDR direct : [note REMOTE_ADDR was not resolved here]
2 Warning: gethostbyaddr() : Address is not a valid IPv4 or IPv6 address in
env.php on line 2
REMOTE_HOST by var name: [again REMOTE_ADDR was not resolved here]
3 REMOTE_HOST hard-coded : c-20-1-22-40.client.comca st.net
4 REMOTE_HOST by index 9 : c-20-1-22-40.client.comca st.net
5 [ below is output from while loop]
0 =>
1 => */*
2 => /bin:/sbin:/usr/bin:/usr/sbin
3 => /env.php
4 => /env.php
5 => /env.php
6 => /usr/local/psa/home/vhosts/gldomain.com/httpdocs
7 => /usr/local/psa/home/vhosts/gdomain.com/httpdocs/env.php
8 => /usr/local/psa/home/vhosts/gldomain.com/httpdocs/env.php
9 => 204.146.241.180
10 => 20.1.22.40
11 => 80
12 => 1353
13 => Apache/1.3.27 Server at www.gldomain.com Port 80
14 => Apache/1.3.27 (Unix) mod_python/2.7.8 Python/2.2.2
mod_webapp/1.2.0-dev mod_perl/1.27 mod_throttle/3.1.2 PHP/4.3.2
FrontPage/5.0.2.2510 mod_ssl/2.8.14 OpenSSL/0.9.7c
15 => CGI/1.1
16 => GET
17 => HTTP/1.1
18 => Keep-Alive
19 => Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)
20 => QaQZes2T974AAKl nBWg
21 => cs@gldomain.com
22 => 0
23 => en-us
24 => gzip, deflate
25 => www.gldomain.com
26 => www.gldomain.com
27 => Array

[Pedro Graca]

Re: Parsing $_SERVER array problem

CPD wrote:[color=blue]
> I can't parse $_SERVER when using the alphabetic key instead of the numeric
> index of the array.[/color]

I find this very strange!

My $_SERVER array (and every other $_SERVER array anywhere I've seen)
does not have numeric indexes.

[color=blue]
> 1 echo "REMOTE_ADD R direct : ". $_SERVER['REMOTE_ADDR'] . "<br>\n";[/color]

<snip>
[color=blue]
> Here is the corresponding output, with notes in square brackets:
>
> 1 REMOTE_ADDR direct : [note REMOTE_ADDR was not resolved here][/color]

<snip>

What are the real contents of $_SERVER['REMOTE_ADDR']?
I'm pretty sure it should be an IP address, not a [resolved] host name.

--
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== ** ## !! !! ## ** ==
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[TreeNet Admin]

Re: Parsing $_SERVER array problem

In article <aeVod.384689$w V.23482@attbi_s 54>, anonymous@nospa m.pls
says...[color=blue]
> I can't parse $_SERVER when using the alphabetic key instead of the numeric
> index of the array. Below is some of the line-numbered code, followed by
> the corresponding output. For this posting, IP address and domains shown
> are fictitious. Note how the REMOTE_HOST is resolved by gethostbyaddr()
> using a hard-coded IP address or the array index "10", but it fails
> completely when the literal key REMOTE_ADDR is used.
>
> Any help with this will be greatly appreciated. Thanks!
>[/color]

You will probably have better success inserting phpinfo() in your code
and checking to see what the $_SERVER environment have defined as names.


--
AJ
Treehouse Networks abuse@

https://www.treenetnz.com

[CPD]

Re: Parsing $_SERVER array problem

REMOTE_ADDR does contain a numeric IP address, and I did not expect it to
have a host name. What I meant by 'resolve' was actually getting the IP
address value using the construct $_SERVER['REMOTE_ADDR']. I just found out
that I am able to get the IP address via the old superglobal
$HTTP_SERVER_VA RS['REMOTE_ADDR'], but not via the newer
$_SERVER['REMOTE_ADDR'].

phpinfo() does expose all the values in each of the superglobals.

Is there some PHP setting required to use $_SERVER?


"Pedro Graca" <hexkid@dodgeit .com> wrote in message
news:slrncq8t4g .vuv.hexkid@ID-203069.user.uni-berlin.de...[color=blue]
> CPD wrote:[color=green]
> > I can't parse $_SERVER when using the alphabetic key instead of the[/color][/color]
numeric[color=blue][color=green]
> > index of the array.[/color]
>
> I find this very strange!
>
> My $_SERVER array (and every other $_SERVER array anywhere I've seen)
> does not have numeric indexes.
>
>[color=green]
> > 1 echo "REMOTE_ADD R direct : ". $_SERVER['REMOTE_ADDR'] . "<br>\n";[/color]
>
> <snip>
>[color=green]
> > Here is the corresponding output, with notes in square brackets:
> >
> > 1 REMOTE_ADDR direct : [note REMOTE_ADDR was not resolved here][/color]
>
> <snip>
>
> What are the real contents of $_SERVER['REMOTE_ADDR']?
> I'm pretty sure it should be an IP address, not a [resolved] host name.
>
> --
> Mail sent to my "From:" address is publicly readable at[/color]
http://www.dodgeit.com/[color=blue]
> == ** ## !! !! ##[/color]
** ==[color=blue]
> TEXT-ONLY mail to the complete "Reply-To:" address ("My Name"[/color]
<my@address>) may[color=blue]
> bypass the spam filter. I will answer all pertinent mails from a valid[/color]
address.

[Pedro Graca]

Re: Parsing $_SERVER array problem

[ Please don't toppost. ]
[ See http://www.greenend.org.uk/rjk/2000/06/14/quoting.html ]

CPD top-posted:[color=blue]
> I just found out
> that I am able to get the IP address via the old superglobal
> $HTTP_SERVER_VA RS['REMOTE_ADDR'], but not via the newer
> $_SERVER['REMOTE_ADDR'].
>
> phpinfo() does expose all the values in each of the superglobals.[/color]

This is getting stranger and stranger.

Did you try the phpinfo() in the same script that is giving you trouble,
right after the troublesome line?
[color=blue]
> Is there some PHP setting required to use $_SERVER?[/color]

I don't think so.

What's your PHP version?
How are you using it (as a module or as CGI)?
--
Mail sent to my "From:" address is publicly readable at http://www.dodgeit.com/
== ** ## !! !! ## ** ==
TEXT-ONLY mail to the complete "Reply-To:" address ("My Name" <my@address>) may
bypass the spam filter. I will answer all pertinent mails from a valid address.