Parse error: syntax error, unexpected 'object' (T_STRING), expecting ')'

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PHP

OOP

I have an array I want to contain objects but it keeps returning

Parse error: syntax error, unexpected 'Object' (T_STRING), expecting ')' 

A closer look at what causes such errors reveals it occurs when strings are not wrapped in quotes but I can't seem to decipher what string I'm not wrapping. My code is posted below

$all_users = Array
(
    [user_name] => Admin Object
        (
            [can_comment] => 1
            [can_view_announcements] => 1
            [profile_pic] => "/dir/accounts/assets.png"
            [can_delete_comment] => 1
        )
)

What I have tried:

The code that creates this is
$all_users = array();
$user_name = new Member("user_name");
$all_users['user_name'] = $user_name;

Please what is wrong with it?