How do I replace $session->clear('mynamespace') on Joomla 4 or 6?

In Joomla 4, clear() is not “clear this key”. Namespaced get/set is also deprecated. People think they logged out one value and they wiped the session. Use $session->remove($key). Use remove() for one key. Prefix keys yourself instead of the old namespace argument.

JSESSION-CLEAR-001

$session->clear('mynamespace')

JSession::clear($key) now clears everything

In Joomla 4, clear() is not “clear this key”. Namespaced get/set is also deprecated. People think they logged out one value and they wiped the session.

$session->clear('mynamespace') → $session->remove($key)

Dies at Joomla 3 → 4J3: Works nativelyJ4: Changed behaviourJ6: Changed behaviourBC plugin: not applicablePatch possible — review itJoomla API

Symptoms people search

users logged out randomly · cart emptied · session namespace

Replace this code

Swap $session->clear('mynamespace') for $session->remove($key).

Joomla 3

Remove or stop calling this

$session->clear('com_lms');
$session->get('foo', null, 'com_lms');

Joomla 4 / 6

Use this instead

$session->remove('com_lms.foo');
// Do not pass a namespace argument to get/set.

How to fix it

1Use remove() for one key.
2Prefix keys yourself instead of the old namespace argument.

Also known as

Session::clear · session namespace

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$session->clear('mynamespace')

Symptoms people search

Replace this code

How to fix it

Also known as

Related issues

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