PHP Fatal error: Cannot redeclare class egw

nontrivial 2014-08-18 18:30:40 UTC #1

Hello,

After much research, trial, and error, it seems as though on Ubuntu
14.04/Zentyal 3.5 if you use php-apc you get the error “PHP Fatal
error: Cannot redeclare class egw in
/usr/share/egroupware/phpgwapi/inc/class.egw.inc.php on line 33” for
both EGW 1.8 and 1.14. Is anybody successfully using PHP APC on Ubuntu
14.04?

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James D Bearden
Nontrivial Solutions, LLC
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mailto://james@nontrivial.net
(405) 698-3702

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Ralf_Becker_Stylite 2014-08-19 07:28:26 UTC #2

Hi James,

Hello,

After much research, trial, and error, it seems as though on Ubuntu
14.04/Zentyal 3.5 if you use php-apc you get the error “PHP Fatal
error: Cannot redeclare class egw in
/usr/share/egroupware/phpgwapi/inc/class.egw.inc.php on line 33” for
both EGW 1.8 and 1.14. Is anybody successfully using PHP APC on Ubuntu
14.04?

I would not recommend APC with php5.5, better use OPCache for opcode
caching and APCu as shared memory user-level cache with at least 128,
better 256MB (apc.shm_size * apc.shm_segments).

We had a couple of wired issues with APC and 5.4 and never tried with it
in 5.5, as fully supported OPCache is available by default.

Ralf

–
Ralf Becker
Director Software Development

Stylite AG

Morschheimer Strasse 15 | Tel. +49 6352 70629 0
D-67292 Kirchheimbolanden | Fax. +49 6352 70629 30

Email: rb@stylite.de

www.stylite.de | www.egroupware.org

Managing Directors: Andre Keller | Ralf Becker | Gudrun Mueller
Chairman of the supervisory board: Prof. Dr. Birger Leon Kropshofer

VAT DE214280951 | Registered HRB 31158 Kaiserslautern Germany

Mgr_Peter_Tuharsky_M 2015-01-29 11:11:44 UTC #3

Hi,

I’m testing a migration to Debian 7 and EGW 14.1. I found older thread
on other topic (see bottom of message), where Ralph makes some
recommendations that I don’t know how to fulfill.

Please, is there any tested and working configuration with Debian 7? Is
there any way to do it without using packages outside of official
repository (excepting the SUSE/DEB EGW packages)?

Because

1, I see only PHP-APC in repository, not APCU

2, Is this valid way to install OPCache? Or is there other recommended way?
http://serverfault.com/questions/537287/how-to-enable-opcache-in-debian

3, Is it recommended to change in
/etc/apache2/sites-available/egroupware.conf
the php_value memory_limit 128M
accordingly to the apc.shm value? Or are they totally independent?

I apologize, the questions could seem obvious for someone experienced;
I’m not too familiar with Apache/PHP modules inner relationships.

The Ralph’s information (and the answers) seem quite important. Could
someone knowledgeable, please, also update the Wiki accordingly?
http://community.egroupware.org/wiki?wikipage=ReleaseNotes14.1

Thank You
Peter

Dňa 19.08.2014 o 09:28 Ralf Becker napísal(a):

I would not recommend APC with php5.5, better use OPCache for opcode
caching and APCu as shared memory user-level cache with at least 128,
better 256MB (apc.shm_size * apc.shm_segments).

We had a couple of wired issues with APC and 5.4 and never tried with it
in 5.5, as fully supported OPCache is available by default.

Ralf

Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/

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Ralf_Becker_Stylite 2015-01-29 18:16:46 UTC #4

Hi Peter,

Hi,

I’m testing a migration to Debian 7 and EGW 14.1. I found older thread
on other topic (see bottom of message), where Ralph makes some
recommendations that I don’t know how to fulfill.

Please, is there any tested and working configuration with Debian 7? Is
there any way to do it without using packages outside of official
repository (excepting the SUSE/DEB EGW packages)?

Because

1, I see only PHP-APC in repository, not APCU
That’s true for Wheezy
2, Is this valid way to install OPCache? Or is there other recommended way?
http://serverfault.com/questions/537287/how-to-enable-opcache-in-debian
Yeap, that’s the easiest way currently.
3, Is it recommended to change in
/etc/apache2/sites-available/egroupware.conf
the php_value memory_limit 128M
accordingly to the apc.shm value? Or are they totally independent?
memory_limit has nothing to do with APC(u), values are independent.

Ralf

I apologize, the questions could seem obvious for someone experienced;
I’m not too familiar with Apache/PHP modules inner relationships.

The Ralph’s information (and the answers) seem quite important. Could
someone knowledgeable, please, also update the Wiki accordingly?
http://community.egroupware.org/wiki?wikipage=ReleaseNotes14.1

Thank You
Peter

Dňa 19.08.2014 o 09:28 Ralf Becker napísal(a):

I would not recommend APC with php5.5, better use OPCache for opcode
caching and APCu as shared memory user-level cache with at least 128,
better 256MB (apc.shm_size * apc.shm_segments).

We had a couple of wired issues with APC and 5.4 and never tried with it
in 5.5, as fully supported OPCache is available by default.

Ralf

–
Ralf Becker
Director Software Development

Stylite AG

Morschheimer Strasse 15 | Tel. +49 6352 70629 0
D-67292 Kirchheimbolanden | Fax. +49 6352 70629 30

Email: rb@stylite.de

www.stylite.de | www.egroupware.org

Managing Directors: Andre Keller | Ralf Becker | Gudrun Mueller
Chairman of the supervisory board: Prof. Dr. Birger Leon Kropshofer

VAT DE214280951 | Registered HRB 31158 Kaiserslautern Germany

Mgr_Peter_Tuharsky_M 2015-01-30 08:18:00 UTC #5

Ralf_Becker_Stylite 2015-01-30 09:09:56 UTC #6

Hi Peter,

Ralph, Thak You for answer (straight to the point as usual

So if I do understand it correctly, I should
1, install OPCache this way
2, avoid APC from repository
3, install APCU from outer sources
That’s what we recommend for php 5.5+ in general.

In some rare cases we had to do that for php 5.4 too.

I never had to do that with an up to date Debian 7.

Using OPCache and APCu works well with EGroupware under php 5.4 - 5.6
according to my experience.

Ralf

Right?

Dňa 29.01.2015 o 19:16 Ralf Becker napísal(a):

Hi Peter,

Hi,

I’m testing a migration to Debian 7 and EGW 14.1. I found older thread
on other topic (see bottom of message), where Ralph makes some
recommendations that I don’t know how to fulfill.

Please, is there any tested and working configuration with Debian 7? Is
there any way to do it without using packages outside of official
repository (excepting the SUSE/DEB EGW packages)?

Because

1, I see only PHP-APC in repository, not APCU
That’s true for Wheezy
2, Is this valid way to install OPCache? Or is there other recommended way?
http://serverfault.com/questions/537287/how-to-enable-opcache-in-debian
Yeap, that’s the easiest way currently.
3, Is it recommended to change in
/etc/apache2/sites-available/egroupware.conf
the php_value memory_limit 128M
accordingly to the apc.shm value? Or are they totally independent?
memory_limit has nothing to do with APC(u), values are independent.

Ralf

I apologize, the questions could seem obvious for someone experienced;
I’m not too familiar with Apache/PHP modules inner relationships.

The Ralph’s information (and the answers) seem quite important. Could
someone knowledgeable, please, also update the Wiki accordingly?
http://community.egroupware.org/wiki?wikipage=ReleaseNotes14.1

Thank You
Peter

Dňa 19.08.2014 o 09:28 Ralf Becker napísal(a):

I would not recommend APC with php5.5, better use OPCache for opcode
caching and APCu as shared memory user-level cache with at least 128,
better 256MB (apc.shm_size * apc.shm_segments).

We had a couple of wired issues with APC and 5.4 and never tried with it
in 5.5, as fully supported OPCache is available by default.

Ralf

Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/

eGroupWare-users mailing list
eGroupWare-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/egroupware-users

Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/

eGroupWare-users mailing list
eGroupWare-users@lists.sourceforge.net
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–
Ralf Becker
Director Software Development

Stylite AG

Morschheimer Strasse 15 | Tel. +49 6352 70629 0
D-67292 Kirchheimbolanden | Fax. +49 6352 70629 30

Email: rb@stylite.de

www.stylite.de | www.egroupware.org

Managing Directors: Andre Keller | Ralf Becker | Gudrun Mueller
Chairman of the supervisory board: Prof. Dr. Birger Leon Kropshofer

VAT DE214280951 | Registered HRB 31158 Kaiserslautern Germany

Mgr_Peter_Tuharsky_M 2015-01-30 09:24:32 UTC #7

Ralf_Becker_Stylite 2015-01-30 09:51:18 UTC #8

Well, so installing OPCache and keeping ACU from repository should work?
No, you can NOT use OPCache together with APC!

With OPCache you have to use APCu.

Ralf

Dňa 30.01.2015 o 10:09 Ralf Becker napísal(a):

Hi Peter,

Ralph, Thak You for answer (straight to the point as usual

So if I do understand it correctly, I should
1, install OPCache this way
2, avoid APC from repository
3, install APCU from outer sources
That’s what we recommend for php 5.5+ in general.

In some rare cases we had to do that for php 5.4 too.

I never had to do that with an up to date Debian 7.

Using OPCache and APCu works well with EGroupware under php 5.4 - 5.6
according to my experience.

Ralf

Right?

Dňa 29.01.2015 o 19:16 Ralf Becker napísal(a):

Hi Peter,

Hi,

I’m testing a migration to Debian 7 and EGW 14.1. I found older thread
on other topic (see bottom of message), where Ralph makes some
recommendations that I don’t know how to fulfill.

Please, is there any tested and working configuration with Debian 7? Is
there any way to do it without using packages outside of official
repository (excepting the SUSE/DEB EGW packages)?

Because

1, I see only PHP-APC in repository, not APCU
That’s true for Wheezy
2, Is this valid way to install OPCache? Or is there other recommended way?
http://serverfault.com/questions/537287/how-to-enable-opcache-in-debian
Yeap, that’s the easiest way currently.
3, Is it recommended to change in
/etc/apache2/sites-available/egroupware.conf
the php_value memory_limit 128M
accordingly to the apc.shm value? Or are they totally independent?
memory_limit has nothing to do with APC(u), values are independent.

Ralf

I apologize, the questions could seem obvious for someone experienced;
I’m not too familiar with Apache/PHP modules inner relationships.

The Ralph’s information (and the answers) seem quite important. Could
someone knowledgeable, please, also update the Wiki accordingly?
http://community.egroupware.org/wiki?wikipage=ReleaseNotes14.1

Thank You
Peter

Dňa 19.08.2014 o 09:28 Ralf Becker napísal(a):

I would not recommend APC with php5.5, better use OPCache for opcode
caching and APCu as shared memory user-level cache with at least 128,
better 256MB (apc.shm_size * apc.shm_segments).

We had a couple of wired issues with APC and 5.4 and never tried with it
in 5.5, as fully supported OPCache is available by default.

Ralf

Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/

eGroupWare-users mailing list
eGroupWare-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/egroupware-users

Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/

eGroupWare-users mailing list
eGroupWare-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/egroupware-users

Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/

eGroupWare-users mailing list
eGroupWare-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/egroupware-users

Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/

eGroupWare-users mailing list
eGroupWare-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/egroupware-users

–
Ralf Becker
Director Software Development

Stylite AG

Morschheimer Strasse 15 | Tel. +49 6352 70629 0
D-67292 Kirchheimbolanden | Fax. +49 6352 70629 30

Email: rb@stylite.de

www.stylite.de | www.egroupware.org

Managing Directors: Andre Keller | Ralf Becker | Gudrun Mueller
Chairman of the supervisory board: Prof. Dr. Birger Leon Kropshofer

VAT DE214280951 | Registered HRB 31158 Kaiserslautern Germany

Mgr_Peter_Tuharsky_M 2015-01-30 10:05:30 UTC #9