I have a session variable 'touser' which resets everytime I refresh the page but my session variable for the whole session "user" does not reset.
<?php
session_start(); require("source/header.php");
require("scripts/connection/signup/db.php");
?>
<?php
session_start();
$touser=$_POST["chats"];
$_SESSION["touser"]=$touser;
echo $_SESSION["touser"];
?>
The problem is on page refresh POST values are gone and since you assign them to $touser and it used for session so every page refresh Session value is reset.
Solution is :-
<?php
session_start();
if (isset($_POST['touser'])) { // check if POST have that index or not
$touser = $_POST["chats"]; // if yes then reassign it's value
$_SESSION["touser"] = $touser; // set reassigned value to session variable
}
echo $_SESSION["touser"];// print session value (here if POST have data then new value will show otherwise old one will show)
?>
Check, if $_POST['touser'] exists.
<?php
session_start();
if (isset($_POST['touser'])) {
$touser = $_POST["chats"];
$_SESSION["touser"] = $touser;
}
echo $_SESSION["touser"];
?>
You have to check whether $_POST["chats"] is set or not and then put value into session.
session_start();
if (isset($_POST["chats"])) {
$_SESSION["touser"]=$_POST["chats"];
}
echo $_SESSION["touser"];
Related
How to access the incremented value of session on the same page where we have defined the initial value of session, I am using this method for incrementation of value but on another page
<?php
$_SESSION['indexValue'] = 1;
?>
This is my test.php page where i have decrelaed the inital value of session.
<?php
$Incrementvalue = $_SESSION['indexValue'];
$counter = (int)$Incrementvalue;
if ($counter=$counter) {
$counter++;
$_SESSION['indexValue'] = $counter;
}
echo "$_SESSION['indexValue']";
?>
This is my getdata.php page where I have implmented the increment value function. Now i have to pass this increment value of Session again on test.php page . How can I perform this?
your code seems not to be thought off
first of all, you need to call session_start() at beginning
then you can access everyewhere your $_SESSION variable (if you call session_start() before)
if ($counter=$counter) {
$counter++;
$_SESSION['indexValue'] = $counter;
}
this seems useless
$_SESSION['indexValue']++;
is enough
First of all there are few errors in code like
if ($counter=$counter) should be if ($counter == $counter)
And
echo "$_SESSION['indexValue']" should be echo $_SESSION['indexValue'].
Now answer to your question is that session is accessible anywhere throughout the project/application. So you need not to pass it , just access it as $_SESSION['indexValue'].
Hey guys I'm trying to pass a php variable to another page. I tried it with sessions but no result.
newspaper.php
$newspaper= $newspaper['newspath'];
print_r($newspaper);
this outputs:
path/to/the/newspaper.
Now I want to use the variable in the second page.
newspaperviewer.php
echo $newspaper;
$SESSION = $newspaper;
I tried the first one but no result. The second one seems to be faulty.
Hope you guys can help me out.
Session is what you are looking for. A session variable can store a value and use this value on all pages of your project.
First thing to do is to start session on each file on your project. You can do this like this example
<?php
session_start(); //declare you are starting a session
$_SESSION['newspaper'] = "New York Times"; //Assign a value to the newspaper session
?>
On the other file you can use the value of the session by trying something like this
<?php
session_start(); //always start session don't forget!!
echo $_SESSION['newspaper'];
// This will echo New York Times
?>
Store the variable after starting session on page A, like so:
// FIRST PAGE (foo.php)
session_start();
$_SESSION['name'] = 'Jack';
Now, on the second page (or any page that you want to have access to $_SESSION, simply do the same but pull the variable.
// SECOND PAGE (bar.php)
session_start();
$name = $_SESSION['name'];
$_SESSION['name'] = null; // Or use session_unset() to delete all SESSION vars.
And that's how you pass variables using $_SESSION.
Please use this code to set session
<?php
// Start the session
session_start();
?>
<!DOCTYPE html>
<html>
<body>
<?php
// Set session variables
$_SESSION["favcolor"] = "green";
$_SESSION["favanimal"] = "cat";
echo "Session variables are set.";
?>
</body>
</html>
You can write like this
newspaper.php
session_start();
$newspaper= $newspaper['newspath'];
$_SESSION['newspaper'] = $newspaper;
Now you can use this session variable in
newspaperviewer.php
session_start();
$newspaper = $_SESSION['newspaper'];
echo $newspaper;
session_unset(); // remove all session variables
First
newspaper.php
$newspaper= $newspaper['newspath'];
//print_r($newspaper);
session_start(); //it starts your session here
$_SESSION['newspaper']=$newspaper; //it sets a session variable named as newspaper
Second
$newspaper= isset($_SESSION['newspaper'])?$_SESSION['newspaper']:''; //checks and sets value
echo $newspaper; //outputs value
For more see session_start
http://php.net/manual/en/session.examples.basic.php
First you will need to start the session by using session_start() at the top of your page. Second, a session variable is written like this: $_SESSION['foo'].
I suggest you read these pages to get a better understanding of what's going on.
http://php.net/manual/en/reserved.variables.session.php
http://www.w3schools.com/php/php_sessions.asp
My php website flows like this:
Page1.php has an html form which POSTs to Page2.php
Page2.php stores all the POST data into SESSION variables and has a button leading to Page3.php
Page3.php has another form which POSTs its data to Page4.php
Page4.php then stores all its POST data into SESSION variables
My problem is that it may be nessicary for a user to click the back button on Page4.php to go back to Page3.php and change some input. AS im sure your all aware when they get back to Page3.php the form will be blank as the entire page is re-rendered in its default state.
To get around this and re-display the user's previous input im doing this:
<input value="<?php echo $_POST["guest1Ticket"];?> " type="text" name="guest1Ticket" id="guest1Ticket" onblur="isTicketNumber(this)" size ="22"/>
This being the important part - <?php echo $_POST["guest1Ticket"];?>
This works but creates another problem for me. If the user goes back to Page1.php (before colsing their browser) and starts the process over again when they get to Page3.php the data from their last run through will be loaded into the form.
What I figure I need to do is clear all of the sdession variables when the user visists Page1.php. I tried to to that like this:
<?php
session_start();
session_unset();
session_destroy();
?>
(The above is at the very top of my file with no whitespace before the first character.)
No Warnings are generated when Page1.php loads but the session variables are not getting unset. When I get to Page3.php the data from the last run is still being entered into the form.
How can I clear my session data correctly?
BTW I only need this to work in Chrome and thats where im testing.
Only use session_unset() for older deprecated code that does not use $_SESSION.
see session_destroy manual
example you can try and see how it works
session.php
<?php
session_start();
$_SESSION = array('session1'=>1,'session2'=>2);
echo $_SESSION['session1']; //1
$_SESSION['session1'] = 3;
echo "<pre>";
print_r($_SESSION); //session one now updated to 3
echo "</pre>";
$_SESSION = array();
if ($_SESSION['session1']) {
echo $_SESSION['session1']; // IS NOW EMPTY
} else {
echo "woops... nothing found";
}
?>
<p>
<a href="destroyed.php">NOW GOING TO DESTROYED PHP<a/>
</p>
<?php
session_destroy();
?>
destroyed.php
<?php
session_start(); // calling session start first on destroyed.php
print_r($_SESSION); // prints Array ( )
?>
From the documentation:
If $_SESSION (or $HTTP_SESSION_VARS for PHP 4.0.6 or less) is used,
use unset() to unregister a session variable, i.e. unset ($_SESSION['varname']);
And take care about session_destroy:
session_destroy destroys all of the data associated with the current session. It does not unset any of the global variables associated with the session
Use session_unset(). Like this:
<?php session_start(); ?><!DOCTYPE html>
<html>
<body>
<?php
$_SESSION["variabletounset"] = "I am going to be unset soon along with all of the other session variables.";
print '<pre>' . "\n";
print_r($_SESSION);
print ' </pre>' . "\n";
session_unset();
print ' <pre>' . "\n";
print_r($_SESSION);
print ' </pre>' . "\n";
?>
</body>
</html>
This would output:
Array
(
variabletounset => I am going to be unset soon along with all of the other session variables.
)
Array
(
)
page1.php
$_SESSION['sVar'] = 'XYZ';
header('Location:page1.php');
page1.php
echo $_SESSION['sVar']; // Works well
page1.php
echo $_SESSION['sVar']; // donot get displayed after adding following line
unset($_SESSION['sVar']);
My Question is : When I am echo session variable it works well but when i destroy that variable after echo its not getting echo.
This works fine for me
session1.php :
<?php
session_start();
$_SESSION['sVar'] = 'somecrap';
header("Location: session2.php");
exit;
session2.php :
<?php
session_start();
echo $_SESSION['sVar'];
unset($_SESSION['sVar']);
Obviously if I refresh session2.php I get an undefined index warning
Are you starting the session in both pages?
I am setting up a login form.
Expected Result:
Echo session username on page after successful login.
Actual Result:
Login is successful. Session username does not echo. Appears as though session username either does not exist or it is not persisting to the next page.
Is there something wrong with the code below?
LOGIN.PHP
...
session_start();
if (mysql_num_rows($result) ==1)
{
session_regenerate_id();
$row = mysql_fetch_assoc($result);
$profileid = $row['userid'];
$profile = $row['username'];
//Set session
$_SESSION['profileid'] = $profileid;
//Put name in session
$_SESSION['profile'] = $profile;
//Close session writing
session_write_close();
//Redirect to user's page
header("location: index.php?msg=userpage");
exit();
}
...
INDEX.PHP
...
<?php
session_start();
if($_GET['msg']=="userpage")
{
echo $_SESSION['profile'];
}
...
Edited:
Put session_start in php tags.
Changed HTML to INDEX.PHP.
"If" brace closed.
Changed while to if in LOGIN.PHP.
Changed username to userpage
You don't need to be opening/closing sessions, it's not worth the extra lines of code. I also don't know why you're regenerating the session ID.
But, one thing is your HTML file is badly constructed, and it almost looks like the session_start() isn't inside any PHP tags, so it's not even being treated as code.
first of all your HTML is yet PHP as it involves PHP tags only.
Replace while with if coz you only want to set the $_SESSION variables once.
And for the last part what you are looking for is this
<?php
session_start(); //at the beginning of your script
if($_GET['msg']=="username")
{
echo $_SESSION['profile'];
}
?>
Make sure you eliminate all the whitespaces before the opening of your first <?php tag on your script as that gives potential header errors.
close the if loop in html file
EDITED:
I did this simple code in my page and as per session concept is concerened The code is working fine...make corrections accordingly
p1.php
<?php
session_start();
//Put name in session
$_SESSION['profile'] = "Pranav";
//Close session writing
//Redirect to user's page
header("location: p2.php?msg=userpage");
exit();
?>
p2.php
<?php
session_start();
if($_GET['msg']=="userpage")
{
echo $_SESSION['profile'];
}
?>
FOR NEW SESSION ID
USE THIS
$a = session_id();