ID:               23580
 Comment by:       ns at canada dot com
 Reported By:      maximiliano dot marques at bol dot com dot br
 Status:           Open
 Bug Type:         Apache related
 Operating System: Conectiva Linux 8 Kernel 2.4.19
 PHP Version:      4.3.2
 New Comment:

We've been having this problem as well. In support of the caching
hypothesis, here's some info I've collected.

This is PHP 4.3.2; phpinfo() is available at
http://nbtsc.org/~noam/info.php

The include_path for our server is set in php.ini to
".:/usr/share/pear". phpinfo() verifies this as the master setting.

Output from 'ps xaf' showing the httpd processes:

30908 ?        SN     0:02 httpd
30930 ?        SN     0:00  \_ httpd
30932 ?        SN     0:00  |   \_ httpd
30936 ?        SN     1:52  |       \_ httpd
30962 ?        SN     2:00  |       \_ httpd
... (30963 through 30985)
30986 ?        SN     0:01  |       \_ httpd
19881 ?        SN     0:00  \_ httpd
19882 ?        SN     0:00  |   \_ httpd
19884 ?        SN     1:41  |       \_ httpd
... (19885 through 19908)
19909 ?        SN     0:01  |       \_ httpd
11727 ?        SN     0:00  \_ httpd
11728 ?        SN     0:00      \_ httpd
11730 ?        SN     0:15          \_ httpd
... (11731 through 11754)
11755 ?        SN     0:00          \_ httpd

I then ran 'w3m -dump' in a loop, loading this simple php script 100
times:

<?php
print "getmypid() = " . getmypid() . "  ";
print "ini_get(include_path) = " . ini_get("include_path") . "<br
/>\n";
?>

I find the output rather interesting. All the requests served by PIDs
in the 30xxx range (one branch of the httpd process tree) are have
consistently incorrect include_path="tes/info.nbtsc.org/photos/" (which
is a fragment of the path '/home/sites/info.nbtsc.org/photos'). All the
requests served by PIDs in the 19xxx range have consistently correct
include_path=".:/usr/share/pear". The requests served by PIDs in the
11xxx range have varying include_paths; sometimes, when the same
process served a second request, it had a different include path from
the first time. The include_paths from the 11xxx range are either
".:/usr/share/pear", "2.php", or (in hexadecimal) 0x58 0xCC 0x20 0x20.
What I haven't been able to figure out is where these include_paths are
coming from.

I will see what more I can track down, and zeev, I can check with the
main server administrator to see about getting you temporary access.
What level of access would you need?

Noam


Previous Comments:
------------------------------------------------------------------------

[2003-07-23 10:33:02] [EMAIL PROTECTED]

I'm trying to reproduce this, but so far without any success.  I tried
to stress-test PHP with multiple vhosts and see if there are any
'leaks' of include_paths - but after hundreds of thousands of requests,
there were none.

I'm very interested in what you say about the single-process mode. 
Basically, what you describe is *not* the behavior PHP is supposed to
display.  The include_path settings should go back to its original
setting at the end of each request.  This is also the behavior that I'm
seeing in my setup.

How did you determine that the include_path setting remains 'cached'?

If that is really the case, then it would greatly help if you could
provide me with temporary access to your server, so I can debug this.

If it's not the case, then it appears we're back in square one...

------------------------------------------------------------------------

[2003-07-16 07:42:21] katana at katana-inc dot com

We have experienced the same problem here since a few month. I was told
that it was gonna be fixed in 4.3.2 but it looks like it's still here
(we were warned by a disk full error because of the error logged filled
with failed includes from an auto_prepend file that belongs to another
vhost).

We can't upgrade to a snapshot since it is a production server.

We are running Gentoo but the same was happening with RedHat 8, running
apache 1.3.27.

The only fix was to change MaxRequestPerChild to 1...

------------------------------------------------------------------------

[2003-06-25 07:34:48] maximiliano dot marques at bol dot com dot br

First answering your questions:

>Do you set the include_path for _every_ vhost?
Not every but almost. I have 7 vhosts and 5 using different
include_path values.
>Do you have php.ini and is it loaded?
Yes, I do and it was loaded since it appear in phpinfo() briefing.
>What is the include_path setting in your php.ini?
include_path = "."
>How many vhosts do you have in your httpd.conf?
7 and I use dynamic IP for all. 3 of them are using same DocumentRoot
but different include_path values.
>If you start apache in single server mode, does it still
happen for every request? (httpd -X -F -DSSL)
Yes, it does. However as in this case there is only one process
running, at first request it keep the include_path value forever. I am
explaining better below.
 
Second I executed several tests including your recommendations above,
adding _“_ around the path and I used netstat and ps to follow httpd
child process behavior while I running your suggested script:
<?php echo ini_get('include_path'); ?>

My conclusion was that the first request that a child process run with
include_path given, it cache the value for include_path (no matter if
it was set in httpd.conf or .htaccess, I tried with both) and child
process never change include_path value anymore while it still alive.

I am using ‘MaxRequestsPerChild 1’ as workaround and however it is
working, performance is debilitated.

------------------------------------------------------------------------

[2003-06-23 20:13:55] [EMAIL PROTECTED]

Try adding "'s around the path. (I always have them around the paths,
e.g. 'php_value include_path "/www/common/:."')

Some questions we need get answers for:
Do you set the include_path for _every_ vhost?
Do you have php.ini and is it loaded?
What is the include_path setting in your php.ini?
How many vhosts do you have in your httpd.conf?
If you start apache in single server mode, does it still
happen for every request? (httpd -X -F -DSSL)

Please run all these tests using this script:

<?php echo ini_get('include_path'); ?>


------------------------------------------------------------------------

[2003-06-19 02:25:19] maximiliano dot marques at bol dot com dot br

Yes I did and it behave exactly the same.

And I also compiled without
--with-regex=system
--enable-inline-optimization

and nothing changed.

I have set include_path in httpd.conf. The follow code I extracted from
my httpd.conf. I am working only with virtual hosts.

<VirtualHost *:80>
    ServerAdmin [EMAIL PROTECTED]
    DocumentRoot /sites/imax/http
    ServerName imax.maximiliano.info
    ServerAlias imax www.imaxmedia.com.br
    ErrorLog logs/imax-error_log
    CustomLog logs/imax-access_log common
    php_value include_path
.:/sites/imax/includes:/sites/imax/instance/imx/includes
    Alias /photo/ "/sites/imax/instance/imx/photo/"
    Alias /file/ "/sites/imax/instance/imx/file/"
    Alias /img/ "/sites/imax/instance/imx/img/"
    Alias /img_dyn/ "/sites/imax/instance/imx/img_dyn/"
    Alias /style/ "/sites/imax/instance/imx/style/"
    Alias /https/ "/sites/imax/https/"
</VirtualHost>

------------------------------------------------------------------------

The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
    http://bugs.php.net/23580

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Edit this bug report at http://bugs.php.net/?id=23580&edit=1

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