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Editorial Team
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Asked: 2026-06-14T12:31:42+00:00

For a project, I am creating a web app, in which, login will be

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For a project, I am creating a web app, in which, login will be a paramount part. Unfortunately, I seem to be unable to get sessions to work properly, so the sign-ins do not last at all.
Here is some simple code I wrote on my Testing/experimentation/debugging page.

Here is the head of the testing page.

<? 
if(!isset($_SESSION)){
    session_start(); 
}
?>
<!DOCTYPE html>
...

Here is the code which uses session data.

$_SESSION[0] = $_SESSION[0] + 1;
echo($_SESSION[0]);

It’s supposed to increment with each, visit, but it hasn’t been doing so, as with the login system.

Here is session setting from the phpinfo() function if it helps.

Session Support enabled
Registered save handlers    files user sqlite
Registered serializer handlers  php php_binary wddx

Directive   Local Value Master Value 
session.auto_start  Off Off
session.bug_compat_42   On  On
session.bug_compat_warn On  On
session.cache_expire    180 180
session.cache_limiter   nocache nocache
session.cookie_domain   no value    no value
session.cookie_httponly Off Off
session.cookie_lifetime 0   0
session.cookie_path /   /
session.cookie_secure   Off Off
session.entropy_file    no value    no value
session.entropy_length  0   0
session.gc_divisor  100 100
session.gc_maxlifetime  1440    1440
session.gc_probability  1   1
session.hash_bits_per_character 4   4
session.hash_function   0   0
session.name    PHPSESSID   PHPSESSID
session.referer_check   no value    no value
session.save_handler    files   files
session.save_path   /tmp    /tmp
session.serialize_handler   php php
session.use_cookies On  On
session.use_only_cookies    On  On
session.use_trans_sid   0   0
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1 Answer

  1. Editorial Team

    You don’t need the !isset to check your session, just call session_start(); at the top of any page that deals with the session variable.

    Keys at the root level must be valid identifiers, so session[1] wouldn’t work, but session[‘1’] would.

    Session documentation there’s some interesting qualifiers.

    There’s also some more advanced examples in the comments:
    If you don’t have control of the register_globals setting: (isset($_REQUEST[‘_SESSION’])).

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