<?php session_start();?>
send the color
<br><br>
<?php
#$_SESSION['color'] = $_GET['color'];
echo $_SESSION['color'];
?>
<br>
<br>
check the session variable
hi,
i need help for the above code.
i want to pass a variable to session.
with above code im doing this but the session variable dissappears when i refresh the page or when i click the bottom link. i want the echo $_SESSION['color']; sticky
what should i do?
with regards
You are assigning value of $_GET['color'] no matter if there is such GET variable or not. Because of this, when there is no $_GET['color'] you are loosing the session variable.
it have to be:
if (isset($_GET['color'])) {
$_SESSION['color'] = $_GET['color'];
}
echo isset($_SESSION['color']) ? $_SESSION['color'] : '';
When $_GET['color'] is empty because color is not in the query string of the URL, you still assign that empty value to $_SESSION['color'].
Don't do that and the value you set won't be overwritten. Nothing was disappearing on its own.
Related
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
<?php $content = $_POST['content']?>
<p>Page title: <input type='text' name='title' value="<?php $content ?>"/></p>
I would like to know if something like this is either possible, or if theres a work around, like a way to save the previously entered content as the value. Any help is greatly appreciated.
Save it in a session and retrieve it anywhere using the key just start the session like below :
<?php
// Start the session
session_start();
?>
<?php
// Set session variables
$content = $_POST['content']
$_SESSION["content"] = $content;
echo "Session variables are set."+ $_SESSION["content"] ;
?>
If you want to do it with PHP you need to learn about sessions and cookies.
Here is an example with cookies
<?php
start_session();
if(isset($_GET["title"])) {
if(isset($_SESSION["oldTitle"])) {
// do what you want to do
}
// update to the new value
$_SESSION["oldTitle"] = $_GET["title"];
}
im very new to PHP, so please excuse me if this is a stupid question.
So here is the scenario.
Im writing a PHP all in one page that gets a random word from an array, scrambles the word, then lets the user guess the word.
now im using the isset(), so it declares the variable, then once submit is clicked, it will get in user input via _POST().
Now the problem
I need the calculated variable to remain constant, but once the page reloads, it regenerates the variable.
is there anyway i can get pass this?
<?php
function GetShuffWord()
{
$arrayName = array('word1','word2','word3','word4','word5');
$randWordIndex = rand(0,4);
$randomWord = $arrayName[$randWordIndex];
$shuffledWord = str_shuffle($randomWord);
return $shuffledWord;
}
if(!isset($_POST['Submit']))
{
define("shuffledWord", GetShuffWord());
$tempWord = shuffledWord;
// showing the user shuffled word
echo " <h1 style='font-size: 50px' align = 'center'> {$tempWord}
</h1>";
}
else
{
$tempWord = shuffledWord;
echo " <h1 style='font-size: 50px' align = 'center'>{$tempWord} </h1>";
echo "else part";
}
?>
another problem is that if i declare the variable in the if, i cannot use variable in the else with out re-generating it.
You can just include the value as a hidden input field in your form.
<input type="hidden" name="myCalculatedValue" value="<?= $tempWord ?>" />
Then when the form is submitted you can just get it via $_POST['myCalculatedValue']
You can use session and put a check that if session has it already dont overwrite.
And when u want to overwrite you can do so as well by passing another flag to the script in your post request.
I am using Magento and trying to save a value in the session as follows in its index.php file, but the value is not being retained.
$_SESSION['myvar'] = '1';
How do I do it?
Thanks
Let's say you want to save the value "Hello world" to the "welcome message" variable in the session. The code would be :
$inputMessage = 'Hello World';
Mage::getSingleton('core/session')->setWelcomeMessage($inputMessage);
Now you want to echo the "welcome message" somewhere else in your code/site.
$outputMessage = Mage::getSingleton('core/session')->getWelcomeMessage();
echo $this->__($outputMessage);
Following the example given by Ali Nasrullah, I would do:
$session = Mage::getSingleton("core/session", array("name"=>"frontend"));
// set data
$session->setData("device_id", 4);
// get data
$myDeviceId = $session->getData("device_id");
Make sure you include [Mage-root]/app/Mage.php befor calling the code above!
#Ali Nasrullah: Pass the value of device:id as second parameter of the setData function.
Mage::getSingleton('core/session')->setMySessionVariable('MyValue');
$myValue = Mage::getSingleton('core/session')->getMySessionVariable();
echo $myValue;
Take Look For More:
Here are code to Get, Set, and Unset Session in Magento
Here are code to Get, Set, and Unset Session in Magento
frontend: Mage::getSingleton('core/session')->setYourNameSession($session_value);
backend: Mage::getSingleton('admin/session')->setYourNameSession($session_value);
First timer to the site, not an overly experienced php programmer here :)
I have a problem, i am using an iframe within a site which im attempting to use a session variable inside, firstly ive just been trying to display the session variable to make sure they are accessible from within the iframe:
echo "session of productcheck ".$_SESSION['productcheck']." ";
echo "session of productcheck1 ".$_SESSION['productcheck1']." ";
echo "session of productcheck2 ".$_SESSION['productcheck2']." ";
echo "session of productcheck3 ".$_SESSION['productcheck3']." ";
this just shows "session of product check" with nothing after each one, I set the session variable as such:
$_SESSION['productcheck'] = $productBox;
the $productBox is a GET from the URL:
echo " <iframe src=\"homeview.php?productBox=$product1\" name=\"FRAMENAME\" width=\"594\" height=\"450\" scrolling=\"No\" id=\"FRAMENAME\" allowautotransparency=\"true\" > </iframe >";
What's strange is if i just take the $productBox variable retrieved from the URL and use that then the code works, its only when i store it in a session variable that it gets confused. I want to retrieve a second $productBox and assign it to session var productcheck1 and so forth down the line. Unfortunately, i have to take one var in at a time, otherwise i could just pass all 4 products and not worry about the sessions.
Perhaps I'm making this far too complicated, any help would be much appreciated Thank you!!
You have to use session_start() in both scripts, the one setting the values (and presumably printing the <iframe>-element?) and the script that produces the contents for the iframe.
e.g. the "outer" script
<?php // test.php
session_start();
$_SESSION['productcheck'] = array();
$_SESSION['productcheck'][] = 'A';
$_SESSION['productcheck'][] = 'B';
$_SESSION['productcheck'][] = 'C';
session_write_close(); // optional
?>
<html>
<head><title>session test</title></head>
<body>
<div>session test</div>
<iframe src="test2.php" />
</body>
</html>
and the script for the iframe content
<?php // test2.php
session_start();
?>
<html>
<head><title>iframe session test</title></head>
<body>
<div>
<?php
if ( isset($_SESSION['productcheck']) && is_array($_SESSION['productcheck']) ) {
foreach( $_SESSION['productcheck'] as $pc ) {
echo $pc, "<br />\n";
}
}
?>
</div>
</body>
</html>
Not sure what's up with your session variables, but you can definitely pass all four variables through the url in your iframe. You just need to separate your key value pairs with an ampersand. So something like this:
file.php?key1=val1&key2=val2&key3=val3 and so on.
This is probably a better way than using session variables if your just trying to get data into that other file.