This is kind of strange.
I'm working with sessions. I have session_start(); at the beginning of all my first php blocks on each page.
When I echo out a session variable on index.php in webroot (/var/html/www) it gives nothing. If I move index.php to /var/html/www/home or some other non-webroot directory it will echo the variable, no problem.
Is there something special I don't know about sessions?
It might be caused by session file that is being used by php is not accessible or running out of disk space. Check your php.ini to find out the session file location and make sure your php can access that file & folder and you have enough disk space.
Related
My problem is that multiple session cookies are generated for the same user and browser/tab.
I have a init.php file, which is the only file responsible for starting sessions, the first few lines of said file looks like this:
<?php
session_start();
...
...?>
This file is located at /include/init.php, which itself is in a subdirectory.
i then have a another php file located at /include/phpjson/memberInfo.php.
This file, like all the other files, includes the init.php file. But as soon as this file is executed, another session cookie shows up in the tmp directory.
The problem isn't just that another session cookie is created, but also that my main pages located at root now seems to be using a different session than the ones located in any subdirectory.
after searching stackoverflow and other sites on google, i found that some people recommended using the session_set_cookie_params function to set the path for the session cookies. However, since all the session cookies were already in the same folder, this didn't have any effect.
I understand that whichever file including the init.php will run the containing code from the file itself, not from where init.php is originally located. Which explains why all the files in root seem to be sharing the same session.
The simple solution here is to have every php script in the root directory, but this doesn't seem like the right thing to do.
If there are any questions regarding this issue please ask in the comments. I will try to respond to them as soon as possible.
Thanks in advance :)
Regards
Daniel Holst
i have 3 basis directories in public_html directory. For example these are:
Directory_A represents http://site.com
Directory_B represents http://subsite-b.site.com
Directory_C represents http://subsite-c.site.com
i have another directory in public_html named Sessions where i want to save the sessions cookies when logged users visit across the directories (site and sub-sites)
the attached picture demonstrated my directory structure clearly in cPanel.
i face no problem to pass session between the folders and sub-folders in Directory_A. the problem appears when visitors switch from Directory_A to Directory_B or Directory_C (visit from http://site.com to http://subsite-b.site.com or http://subsite-c.site.com) sessions are not passed at all although i set the variable session_set_cookie_paramsin every page of the above stated sub-sites like,
$mysession = session_name("mysession");
session_set_cookie_params(0, '/', '.site.com');
session_start();
notable thing is that presently the variable session.save_path has the following configuration on my PHP server.
session.save_path /tmp /tmp
now, as the sessions aren't passed at all from one directory to another directory in public_html, i changed the configuration of session.save_path by pointing the path to public_html/Sessionslike,
session.save_path /public_html/Sessions /public_html/Sessions
the above change in configuration returns following similar warning in every page of http://site.com , http://subsite-b.site.com and http://subsite-c.site.com when visitors visit these sites.
Warning: session_start() [function.session-start]: open(/public_html/session/sess_0d38g21b3153bb4343g8d687442e76ed, O_RDWR) failed: No such file or directory (2) in /home/user/public_html/Directory_B/index.php on line 4
on line 4 as stated in the above warning i've got the code session_start();
what's going wrong here? is it happening because of improper server configuration? what should i do to pass the sessions properly from one directory to another directory?
any idea or knowledge about this issue shall be well appreciated.
its happening because the old sessions that existed in /tmp you didn't copy them over. It can also mean you didn't set the permission on the directory/files to be able to read by the webserver
You need to use a custom session handler to store the sessions in a database instead of using a directory in the filesystem (e.g. /tmp).
Here's some example code: GitHub, and here's some more info on using a custom session handler in PHP.
When you save the session in a database, you can access them from any site, as long as you can connect to the database. It is simpler than it sounds.
session_set_cookie_params(0, '/', '.site.com');
session_start();
to
session_set_cookie_params(0, '/', '.site.com');
session_save_path('/home/user/public_html/Sessions');
session_start();
(Please be patient, this does have something to do with include.) I am waiting for a domain to transfer over and am trying to set it up on the new hosting service ahead of time. I realized that on the old site all the path names were absolute, so all my links on the new host point to pages on the old host. I decided to make them all relative (for future possible moves also). I first did it like this:
index.php
include ('./header.php');
header.php
include "./panel.php";
panel.php
Contents of panel.
This works, and my page displays:
Contents of panel.
Then I decided to set a variable for the domain because I want to include this header file from files in subdirectories and I can use the domain variable to make an absolute path. Right now I have a temporary domain name, which I can change later to the real domain name when the transfer comes through. So I changed header.php to:
$domain="http://tempdomain.com"; //I can change this after the transfer
$panel=$domain."/panel.php";
echo $panel;
if ((include $panel) !== 1)
{
echo "<br>include failed";
}
What I get is:
http://tempdomain.com/panel.php
include failed
I've looked at various sites for include syntax, but I can't find any error in my code. All these files are in the / directory. Any ideas?
When you include, you have to give the directory structured, not the url.
Your hosting server path may be home/public/www/htdocs/your_directory_name/panel.php something like this. Then it will work.
remort include is also posiible
if
1. server's php.ini should allow it.
2. the file which will be included should not be preprossed before include. That means it must return unprocessed code :)
First, the allow_url_fopen flag must be set in php.ini. Otherwise remote include() cannot be done. Run var_dump(ini_get("allow_url_fopen")); to see if it is the case.
Second, "Windows versions of PHP prior to PHP 4.3.0 do not support access of remote files via this function, even if allow_url_fopen is enabled." - see PHP docs
Third, your remote PHP script must produce valid PHP code as output. If you include() via http, then not the script itself, but its output will be included.
PHP sessions work as expected in root directory, and one directory deep. Directories that exist 2 deep end up with a new session id, and all session varaibles are lost.
I include a file config.inc.php (absolute path) into all pages which calls session_start() and initializes the SESSION variables. I found a PHP directive setting that seems to mention subdirectories, but it looks like it is referring to subdirectories of temporarily stored session files.
I've double checked using the HTTPFox firefox plugin, as soon as I visit any page 2 levels deep, the session is gone, and and a new session ID is issued. Very Strange...
Ah, it looks like I was writing my URLS to those particular directories using localhost instead of 127.0.0.1... The different domain caused the browser to think it was a different website, I guess. Changing this solved my problem.
I have a script named INDEX.php that runs from root directory //htdocs because that script needs to use $SESSION variables and other things in sub folder.
Now If I try to debug using eclipse, it asks me new work space, even if i put new work space under htdocs. still the settings inside script are lost.
How to resolve this? How to set dev env in eclipse so that it treats as if code is run from htdocs?
This is a poorly asked question. What do you mean "script needs to use $SESSION variables and other things in sub folder"? If you're referring to $_SESSION, it has nothing to do with folders.
If you're saying that values within $_SESSION are not staying there from one execution to the next, then you need to make sure that cookies are enabled, and that whatever browser/environment you are using to view the page supports cookies.
The cookie holds the ID that identifies the session that allows PHP to find the session data. You can also pass the ID from one URL to another, but that probably won't work in your case.