In my WP plugin, I need to store array from a jason file.
PHP callback retrieve $_POST['some key'] and return to jquery ajax echo sub array json_encode(array['some key']).

In my WP plugin, I need to store array from a jason file.
PHP callback retrieve $_POST[‘some key’] and return sub array json_encode(array[‘some key’]).

I have a problem. I have one page that has a slider and a button. On the second page, I would like to read what value the user sent. I tried to do it using cookies and session, but the problem occurs when I want to display the data on the second page. The second page is as if delayed and shows the previous value. For example, I select the value 500 on the slider, click the button and nothing is displayed on the next page. If I change the value to 1000, 500 is displayed on the next page. It works as if the session was delayed by one sent variable.

Now i got this issue actually i don’t know why, this is the first time that i faced this issue.