Sending value from one page to another with php session

Question

Im using wordpress
I wanted to send the data that is collected by form in the first page to the next page
I didn't find anything that can send array data to another page other than GET command, GET commands uses URL, The reason I'm not using this GET is the sending information includes price values that are calculated using entered information

I found this $_session seems ok to my case (If any others are available, please tell me), Used wp session manager plugin to use $_SESSION.
im using it like this,

if(!isset($_SESSION)){
    session_start();}

if(isset($_GET['B2'])) {
$_SESSION["info"] = "user-form";
$_SESSION["weight"] = $weight;
$_SESSION["price"] = $weight;
buy_now(); }

The B2 is a buy now button

function buy_now(){
 if(isset($_GET['B2'])) {
 header("Location:".get_site_url()."/buy-now/");
 } 

 if(!isset($_SESSION)){
    session_start();}
        echo $_SESSION["info"]."<br>";
        echo $_SESSION["weight"]."<br>";
        echo $_SESSION["price"]."<br>";
 }

The weight and price are Undefined index, the info will display.
What is the problem here? and How can I send variables to another page?, I'm unable to find any solution for now. Please help with this...
Thank you

try to put session_stat(); as a first line in your page. – satish kilari Jul 27 '16 at 07:11 — satish kilari, Jul 27 '16 at 07:11

score 1 · Accepted Answer · edited May 23 '17 at 11:46

1

whenever you are need to check the session is start of not you should not check ist with $_SESSION you need to check the session_id() is generated or not (check the post for check the session start Check if PHP session has already started)

if (session_status() == PHP_SESSION_NONE) {
    session_start();
}
if(isset($_GET['B2'])) {
   $_SESSION["info"] = "user-form";
   $_SESSION["weight"] = $weight;
   $_SESSION["price"] = $weight;
   buy_now(); 
}

edited May 23 '17 at 11:46

Community

1
1

answered Jul 27 '16 at 07:19

Parag Chaure

2,883
2
19
27

Actually i was not checking whether the session is set or not. i just set the session and tried (that's not a problem here). Anyways thats for showing how to check session. In my case it worked for string "info", but its not showing variables ("weight" and "price") in next page. – ltsharma Jul 27 '16 at 09:47

score 0 · Answer 2 · answered Jul 27 '16 at 07:15

0

word press provide another method like wp_cache_get / wp_cache_set

which you can use as own CMS method for passing data from one page to another page by define expiry time as well.

wp_cache_set

wp_cache_get

answered Jul 27 '16 at 07:15

Ashish Patel

3,551
1
15
31

I didn't know this one, Ill try it and update. Thank you – ltsharma Jul 27 '16 at 09:42

score 0 · Answer 3 · answered Jul 27 '16 at 07:35

0

I think you have to try POST method.

    <form action="test.php" method="post">
      <input type="text" name="my_value" value="value"/>
      ...
    </form>

On next page

    <?php echo $_POST['my_value'];?>

That's it.

answered Jul 27 '16 at 07:35

Shahid Latif

135
1
6

Thank you. Actually, POST was my first try. im getting all the required form values using post only (before sending it to next page) and i tried accessing post values through `` in next page but result was "Undefined index". – ltsharma Jul 27 '16 at 09:41

score 0 · Answer 4 · answered Jul 27 '16 at 07:41

0

Refer https://codex.wordpress.org/Class_Reference/WP_Object_Cache for detailed explanation and remember to delete / reset as per your use case else might be a problem.

answered Jul 27 '16 at 07:41

iSensical

747
5
8

Sending value from one page to another with php session

4 Answers4