Question

I have some checkboxes like this:

<input type="checkbox" name="regions[]" value="north-east" />North East<br />
<input type="checkbox" name="regions[]" value="north-west" />North West<br />
<input type="checkbox" name="regions[]" value="east-midlands" />East Midlands<br />
<input type="checkbox" name="regions[]" value="west-midlands" />West Midlands<br />
<input type="checkbox" name="regions[]" value="south-east" />South East<br />
<input type="submit" name="selectionsSubmit" value="Submit" />

Names and values can not be set differently, because I am using it for this php code:

if(isset($_POST['selectionsSubmit'])) {
$regions=$_POST["regions"];
$how_many=count($regions);
if($how_many>0)
{
    $link=home_url('/') ."?tag=";
    if($how_many!=12 && $how_many!=0)
    {
        for($i=0; $i<$how_many; $i++)
        { 
            $link=$link ."+". $regions[$i]; 
        } 
    }
wp_redirect($link);
}
else 
{
    echo 'You did not select anything.';
}}

It generates a tag link and redirects to that link. This is my first php code ever, and I should mention that I use wordpress.

Now I need a way to make selected checkboxes to be remembered for a session… until the user closes the site. I found many ways how to accomplish this, but I couldn’t make it work. I think that HTML5 sessionStorage might be of some use, but my lack of knowledge prevents me from finding the way.

Answer 1

Try php sessions, and if your values are not being tracked make sure to declare the session start. Try it without it first just in case wordpress has already started a session, which is likely. http://php.net/manual/en/features.sessions.php

$regions=$_POST["regions"];
$_SESSION["regions"] = $regions;

EDIT:
@Chibuzu is right, if sessions isn’t working just use this code ABOVE where you are trying to access or set session variables

if(session_id() == '') {
    session_start();
}