I have two pages which I need to pass session information between them. Here's page one.
<?php
session_start();
echo session_id()."<br>";
echo $_SESSION['test']."<br>";
Page two.
<?php
session_start();
echo session_id()."<br>";
$_SESSION['test'] = 'test';
echo $_SESSION['test'];
Page two is in a different directory (same domain), and has Windows Authentication on. Page one is using anonymous authentication. From the output I can see the session ID is the same, but page one doesn't echo the test variable set from page two.
I'm running PHP in IIS 8.5 on Server 2012 R2.
Any help is appreciated.
To clarify, I am calling page two first, and page one will not show the variable.
You need to initialize the variable with a value first before using it.
First run page2.php so, that value of $_SESSION['test'] is set to test
using $_SESSION['test'] = 'test';
Now, run page1.php there you can see the value of $_SESSION['test']
using echo $_SESSION['test']."<br>";
you can also follow these steps to make use of session in a simple way so that you don't have to do session_start() again and again
1. config.php having session_start();
2. page1 having include_once('config.php');
echo session_id()."<br>";
echo $_SESSION['test']."<br>";
3. page2.php having include_once('config.php');
echo session_id()."<br>";
$_SESSION['test'] = 'test';
echo $_SESSION['test'];
Try closing your session in the first page, it's possible that your session file is still open when the second page is called, so you're not seeing the data. Try adding session_write_close() to the first page called.
http://php.net/manual/en/function.session-write-close.php
The issue was with permissions on the session save path. I changed the path to where both directories could write and it works.
Related
When I create a Session with $_SESSION['test'] = "value";, it will not directly be available but only after a reload of the page.
Can I achieve something like this without a reload?
...
$_SESSION['test'] = "value";
echo $_SESSION['test']; // echos "value"
You might be missing the session_start() at the very beginning of the document. But it should work fine without it.
I just tested it with this file:
<?php
session_start();
$_SESSION['foo'] = 'bar';
echo ($_SESSION['foo']);
On the very first page load, this gave me bar on my site.
EDIT: Actually for me I didn't even need to specify it, it worked even without that line, directly after session_destroy().
Found the solution. Solution at the bottom of the post
I have some code in php using sessions (I'm just testing them out - I want to use them in a login system).
test1.php:
<?php
session_start();
$_SESSION["test"] = "works";
echo $_SESSION["test"];
?>
test2.php:
<?php
echo $_SESSION["test"];
?>
test1.php output the correct value (where I wrote echo $_SESSION["test"];), however when I switch to test2.php, there's nothing. I have checked the cookies (both websites have the same session cookie). Could the problem be a server error?
Found the solution. A simple error like that can create a big problem. At the time, I did not realize that I had to have a session_start() at the beginning of every php webpage that I used session variables in.
There must be a sesssion_start(); at the beginning of EVERY php webpage that you are using session variables in
My session does fails to resume when opening another file
I have 2 pages, test.php and test2.php. Each of my files are listed below.
test.php:
<?php
session_save_path('sessBin');
session_id('mySessionID');
session_start();
$_SESSION[1]="yo";
echo $_SESSION[1];
?>
go to test 2
test2.php:
<?php
session_save_path('sessBin');
session_id('mySessionID');
session_start();
echo $_SESSION[1];
echo "bleh";
?>
The first page returns:
"yo" go to test 2
however, when clicking on the link to go to test2.php, only this returns:
"bleh"
I did some research to find that cookies must be enabled. Well, they are... So what is wrong?
NOTE: (A discovery from afterwards)
I did notice that there were several files(including sess_mySessionID) in sessBin so the session is stored. However, the files are empty and the session does not seem to resume
test1.php
// session_save_path('sessBin');
// session_id('mySessionID');
session_start();
$_SESSION['test'] ="yo";
echo $_SESSION['test'];
go to test 2
test2.php
// session_save_path('sessBin');
// session_id('mySessionID');
session_start();
echo $_SESSION['test'];
echo "bleh";
Worked for me !
session_start needs to be defined at the top of every page, right after the opening php tag, on every page where the session data is expected to exist. You must do this before addressing any other session function or variable.
** Update to Answer Based On Your Comments **
check for white space before the opening php tag in test2.php. Also, enable error reporting. You might be sending something out before the session call that is causing session_start() to fail.
Try this:
config.php
<?php
session_start();
?>
In all your other files at the top add this:
include'config.php';
That way you will always have a file where you can put important stuff you might need on other pages as well, so you don't have to retype it every time.
Why I am getting an empty array of the session when I am trying a var_dump in another page?
In the server, the session is stored without any content, only with the name of the id.
With cookies all works well. Sometimes (yes, sometimes), I restart the server, and then, the sessions works well too. What may cause this issue?
Maybe a bug of the php 5.1.6? or a problem in the config of the server?
index_2.php
<?php
session_start();
$_SESSION['xxx'] = "tessstsse";
var_dump($_SESSION);//here show the correct session
header( 'Location: index_3.php');
index_3.php
<?php
session_start();
var_dump($_SESSION);
The output of this will be:
array
empty
Give this a try.. if this works I'd re examine your code else it is probably an issue with your server...
page1.php
<?php
session_start();
$_SESSION['auth'] = "true";
$_SESSION['superhero'] = "batman";
?>
Click here
page2.php
<?php
session_start(); // start the session before using it
//echo $_SESSION['auth']; // will output 'true'
print_r($_SESSION);
?>
destroy.php
<?php
session_start(); // start the session before using it
session_destroy(); // deletes the current session..
?>
I have the web server without space to store the session content.
0% of free space. Delete some data and the problem is solved.
I have created a php session and have assigned data like so
session_start();
$_SESSION['desd']=$imgD;
When i try to retrieve it on other page i get nothing.
this is what i have done on second page,
session_start();
$_imgname = $_SESSION['desd'];
How to do that?
The code is valid, assuming that the variable $imgD is defined (var_dump is one way of checking this, but print or echo may also work).
Check to ensure that cookies are enable in your browser.
Also, be sure that session_start() comes near the top of your script, it should be the first thing sent to the client each time.
To test a session, create "index.php" with the following code:
<?php
session_start();
if(isset($_SESSION['views']))
$_SESSION['views'] = $_SESSION['views']+ 1;
else
$_SESSION['views'] = 1;
echo "views = " . $_SESSION['views'];
?>
Reload the page several times and you should see an incrementing number.
An example of passing session variables between two pages is as follows:
PageOne.php
<?php
session_start();
// makes an array
$colors=array('red', 'yellow', 'blue');
// adds it to our session
$_SESSION['color']=$colors;
$_SESSION['size']='small';
$_SESSION['shape']='round';
print "Done";
?>
PageTwo.php
<?php
session_start();
print_r ($_SESSION);
echo "<p>";
//echo a single entry from the array
echo $_SESSION['color'][2];
?>
For simplicity put PageOne.php and PageTwo.php in the same directory. Call PageOne.php and then PageTwo.php.
Try also tutorials here, here, and here.
If you call session_start(), the server gets the session ID from cookies.
Maybe something is wrong with the cookies because the code is valid.