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[Aetherdan]

// Initialize IPS4 Framework
require_once('./init.php');

/* Get the currently logged in member */
$member = \IPS\Member::loggedIn();
$member_id = $member->member_id;

echo $member_id;

I have created a php file in my forums parent directory, with the following code. Why does it not return the member id of the logged in user?

[bfarber]

Because you have not initialized a dispatcher, the session class (which is needed to determine if the member is logged in or not) does not know if this is the front end or the AdminCP.

Try adding this after the require_once line:

\IPS\Session\Front::i();