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So I have a form that allows the user to select a city. Once selected, this city is then saved to a $_SESSION variable as such : $_SESSION['city_selected'] = $_POST['location_select'];

This works fine once selected. When I var_dump($_SESSION); I see my variable perfectly on after selecting the city and the page refreshing.

Then, if I move to a different page or refresh the same page - the var_dump(); returns NULL

I can't seem to figure this out. My PHP session ID doesn't change.

I am using WAMP on a local server, and session files are saving in the \tmp folder.

Am I missing something? What the heck is happening?

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  • Make sure that you have session_start(); at the top of all your scripts. Oct 11, 2021 at 1:17
  • PHP sessions don't work on a lot of hosts and are incompatible with many features such as CDNs and page caching plugins because of how they work. PHP sessions also rely on a session id cookie so they can't be sued to bypass cookie regulations/laws/banners
    – Tom J Nowell
    Oct 11, 2021 at 9:24

1 Answer 1

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Are you using session__start() ; at the top of that other page? You always need to retrieve session data when changing pages.

https://www.php.net/manual/en/function.session-start.php

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