I am migrating to PHP from ASP where there are the Application Scope variables which are accessible from any page on a website and which are used, in particular, for hit counters.
Is there a similar mechanism in PHP?
33  15855 
aa wrote: I am migrating to PHP from ASP where there are the Application Scope
variables which are accessible from any page on a website and which are
used, in particular, for hit counters.
Is there a similar mechanism in PHP?
Hi,
Yes there is, take a look at sessions: http://nl3.php.net/manual/en/ref.session.php
Regards,
Ruben.
Dear Virgil,
your thinking is still too influenced by the rigid ASP structure.
Relax, open your mind and RTFM on sessions. :-)
Best Regards,
Lucas
"Virgil Green" <vj*@DESPAMobsy dian.com> wrote in message news:<Cn******* ***********@new ssvr30.news.pro digy.com>... "Ruben van Engelenburg" <ruben@NOSPAM!. nl> wrote in message
news:41******** *************** @news.xs4all.nl ... aa wrote: I am migrating to PHP from ASP where there are the Application Scope
variables which are accessible from any page on a website and which are
used, in particular, for hit counters.
Is there a similar mechanism in PHP?
Hi,
Yes there is, take a look at sessions:
http://nl3.php.net/manual/en/ref.session.php
Sessions are not the same as application scope, I don't believe.
I've seen references to shared memory schemes, but they are avaialble to the
entire computer, not just a single application (all sessions running under
the same site id, for example).
- Virgil
> your thinking is still too influenced by the rigid ASP structure. Relax, open your mind and RTFM on sessions. :-)
Session variables are not the same as application-level variables. ASP
offers an application framework, ASP *is* the framework.
Having said that, you can replicate functionality via PHP by either using
common files for variable storage/retrieval, or using a database. Some info
should be easily locatable by searching.
Thanks.
You mean that PHP does not allow to store application-level variables in
memory and every time I need to modify such a variable I have to retrieve it
from disc (a file or DB) and then to write it back?
"Zurab Davitiani" <ag*@mindless.c om> wrote in message
news:AL******** **********@news svr27.news.prod igy.com... your thinking is still too influenced by the rigid ASP structure.
Relax, open your mind and RTFM on sessions. :-)
Session variables are not the same as application-level variables. ASP
offers an application framework, ASP *is* the framework.
Having said that, you can replicate functionality via PHP by either using
common files for variable storage/retrieval, or using a database. Some
info should be easily locatable by searching.
"aa" <aa@virgin.ne t> wrote in message
news:41******** *************** @ptn-nntp-reader04.plus.n et... Thanks.
You mean that PHP does not allow to store application-level variables in
memory and every time I need to modify such a variable I have to retrieve
it
from disc (a file or DB) and then to write it back?
If you want to store variables between one page and another the PHP way is
sessions. All you need is session_start() at the beginning of each script.
This will create an empty $_SESSION array the first time, then give you back
everything you put in it.
Note that you do not have to write the session data out to file manually as
PHP will do it automatically for you at the end of the script. It's all in
the manual.
--
Tony Marston
http://www.tonymarston.net
"Zurab Davitiani" <ag*@mindless.c om> wrote in message
news:AL******** **********@news svr27.news.prod igy.com... > your thinking is still too influenced by the rigid ASP structure.
> Relax, open your mind and RTFM on sessions. :-)
Session variables are not the same as application-level variables. ASP
offers an application framework, ASP *is* the framework.
Having said that, you can replicate functionality via PHP by either using
common files for variable storage/retrieval, or using a database. Some
info should be easily locatable by searching.
aa wrote: Thanks.
You mean that PHP does not allow to store application-level variables in
memory and every time I need to modify such a variable I have to retrieve it
from disc (a file or DB) and then to write it back?
That's the case. However I've found from experience that the only real
application globals needed are configuration parameters. These are
probably best loaded from a flat file as the application shouldn't be
changing them in the first place. Including a config file is fairly low
overhead in php.
If you need global variables then the simplest method is to save them in
a DB table. The overhead of retrieving these should be minimal as DB
servers should cache regular queries.
Dear Zurab,
sessions are stored as common files on the web server, one can
configure it accordingly to his/her needs so that data(variables) are
accesible from the required scope. Is there anything I missed?
Best Regards,
Lucas
Zurab Davitiani <ag*@mindless.c om> wrote in message news:<AL******* ***********@new ssvr27.news.pro digy.com>... your thinking is still too influenced by the rigid ASP structure.
Relax, open your mind and RTFM on sessions. :-)
Session variables are not the same as application-level variables. ASP
offers an application framework, ASP *is* the framework.
Having said that, you can replicate functionality via PHP by either using
common files for variable storage/retrieval, or using a database. Some info
should be easily locatable by searching.
"Lucas" <th******@direc tbox.com> wrote in message
news:fd******** *************** **@posting.goog le.com... Dear Virgil,
your thinking is still too influenced by the rigid ASP structure.
Relax, open your mind and RTFM on sessions. :-)
I'm hardly influenced by ASP structure. I've never worked in ASP. I've read
the PHP manual sections on sessions many times before.
Please, enlighten me. Explain to me how sessions could be used to provide
the equivalent of application-scoped variables in ASP. The closest thing I
see is by sharing session IDs. That, of course, is a hack. There would be
nothing by default to synchronize access between multiple requests, so each
request could start with the same session info, update it and then spend
time merrily writing over each others changes. I could write my own custom
save handler, but I believe that writing such a handler to manage multiple
sessions as a single "session" would violate the spirit of the session and
lead to a maintenance nightmare.
I look forward to the details of your strategy.
- Virgil
Session will only make such a variable available within this session.
But I am talking about a variable available from any page from any session
"Tony Marston" <to**@NOSPAM.de mon.co.uk> wrote in message
news:ci******** ***********@new s.demon.co.uk.. .
"aa" <aa@virgin.ne t> wrote in message
news:41******** *************** @ptn-nntp-reader04.plus.n et... Thanks.
You mean that PHP does not allow to store application-level variables in
memory and every time I need to modify such a variable I have to
retrieve it
from disc (a file or DB) and then to write it back?
If you want to store variables between one page and another the PHP way is
sessions. All you need is session_start() at the beginning of each script.
This will create an empty $_SESSION array the first time, then give you
back everything you put in it.
Note that you do not have to write the session data out to file manually
as PHP will do it automatically for you at the end of the script. It's all in
the manual.
--
Tony Marston
http://www.tonymarston.net
"Zurab Davitiani" <ag*@mindless.c om> wrote in message
news:AL******** **********@news svr27.news.prod igy.com... > your thinking is still too influenced by the rigid ASP structure.
> Relax, open your mind and RTFM on sessions. :-)
Session variables are not the same as application-level variables. ASP
offers an application framework, ASP *is* the framework.
Having said that, you can replicate functionality via PHP by either
using common files for variable storage/retrieval, or using a database. Some
info should be easily locatable by searching.
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