Good afternoon, everybody.
I'm here with a doubt.
Already have an active session, and I have to create another session. with more data.
More This new session is getting empty and the data is going to the first session.
Anyone know how to add data in the session specified by name.
I would be very grateful for the help.
You cannot have multiple sessions active at the same time. However a session is just an associative array, so you can create multiple namespaces inside using different keys. For example
$_SESSION['one'] = $foo;
$_SESSION['two'] = $bar;
I believe you can specify separate sessions using session_name(). Another thing you can do is read the actual session files if you have access to them on the file system. Variables and data are all there in plain text.
But all this sounds very sloppy to me and I can't imagine why you would need to do it this way. Provide more information about what you're trying to accomplish and maybe we can help you find a more straightforward way of achieving it.
Related
Maybe stupid question but its still interesting for me. Is it possible to transfer some data between different sessions? Can I add some variable into another user's $_SESSION directly? Something like this abstract code:
$notMySession = getSessionById('123'); $notMySession['kindaInfo'] = 'something'
No directly you cannot transfer session data from one session to another session. That is what the session is made for.
I hope this helps you.
Each user has its own session, which PHP will use when it speaks to that specific user. That means that each session is isolated from one another.
Since the session is not stored on the users computer, there might be a way to reach the session files from your code and directly modify the files. But that doesn't sound like a particularly sane thing to do.
I'm writing an app using Zend Framework and I need to be able to logout users on demand. The app will receive a request containing some kind of ID's that are mapped to SessionIds and it will end/expire those sessions. I know how to do the mapping, but what then? How do I end a session having its ID?
I see that there is Zend_Session::setId(), but I don't think this does what I want to do.
I have an idea to just delete files that are associated with given session, since they are named sess_[sessionId], but I guess that is an ugly way to do it.
You can save session info to the database. It would be related by session id.
Then create a plugin that checks if the DB row still exists. If not, then execute Zend_Auth::getInstance()->clearIdentity()
The method that logs the user out would delete the session from DB.
Depending on the structure of your sessions and what exactly you are trying to clear, there are a number of ways to destroy, expire and unset Zend_Sessions. Please refer to http://framework.zend.com/manual/1.12/en/zend.session.html for further information.
If in the future you could provide more detail and perhaps a bit of code illustrating your issue I'm sure the community would be more then happy to provide a better answer.
Good Luck.
I have user information which I need to use in different places on the web application, stuff such as email, name, user settings, and so on and so forth.
The question I want to ask, is it wise to do so, or is it a huge waste of memory?
and if it's not wise to do so, are there other things which I can do which could solve my problem?
Thank you.
Store anything you need there, as long as you remember that it is kept on the server and will be retrieved for each page load in the session.
It's usually considered bad practice to store too much in the session as the house-keeping that the server has to perform starts to add up when you've got many users. You only really need to store a user id in the session then you can pull everything else out of a database.
Why not using Cookies??
I have two pages and I want to pass data to each other.
How can I do this without accessing a DB?
Sessions? Cookies? someother magical way?
If you know how, can you please post sample code?
Thanks
Session variables is one way:
$_SESSION["variable"] = "value";
This variable can then be read/modified by another page.
Also note, that you need to start the session by calling start_session(); at the beginning of your script.
And Cookies are another way... You can also try writing in and out of a file instead of a DB
How does a user get between these two pages? I assume a Form based solution is out of the question...
Amongst the possibilities, here are some that I think about :
You could $_SESSION (see Session Handling) -- if both pages are accessed by the same user, without too much time between the two accesses, so the session doesn't expire.
You could store your data to a file ; that'll work fine if :
The amount of data is big
You want it to persist for a long time
But you'll have to do some cleaning-up by yourself
Another idea would be some external daemon, like memcached
But, as it's a caching engine, it's not necessarily good for storing data : the data that is cache can be removed from the cache even if it has not expired yet (i.e. if there is no place left in cache, memcached will remove some least used data)
Of course, if the data is small and you don't mind it going back and forth through the network, and both pages are accessed by the same user using the same browser, you could use cookies
Only a couple of possibilities, though ; my preferences would probably be :
$_SESSION
or files
Depending on your situation.
I have 2 files namely:
uploading.php
emaillinks.php
both include a file inc.php which has all the include files and initiate database connection.
a variable is declared in file uploading.php, i wanted to know how can i access it in emaillinks.php, i cant include uploading.php in emaillinks.php.
I want to avoid cookies because data is big and always different.
what is the best option to make it accessible by emaillinks.php?
Thank You.
Depending on what it is, you could put it into the database or into the session ($_SESSION)
If you can't include you'll need to go with session variables or cookies.
Reading your question the words "registry pattern" suddenly popped into my head. This might be a bit of overkill for your needs, but it might be worth looking into.
You'd probably have to do a lot of refactoring to make this solution available. So you'd probably be best using the session, database or some text file to store your variable.
Here is a good article on using a registry, though (if you're interested).