Why do anonymous functions appear to be rejected inside this PHP Object

Question

I am currently just messing around with PHP and I noticed something interesting that I personally haven't noticed. Anonymous functions do not seem to work inside objects. Why?

Example:

$loop = function ($do) {
    $i = 2;
    $do((object) [
        "i" => $i,
        "domore" => (function () {
            echo "hi";
        })
    ]);
};

$loop(function ($data) {
   echo $data->i;
   echo $data->domore();
});

Throws Error:

2<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined method stdClass::delay() in [...][...]:16
Stack trace:
#0 [...][...](10): {closure}(Object(stdClass))
#1 [...][...](17): {closure}(Object(Closure))
#2 {main}
  thrown in <b>[...][...]</b> on line <b>16</b><br />

Likewise the same code with the return data being an array instead of an object:

$loop = function ($do) {
    $i = 2;
    $do([
        "i" => $i,
        "domore" => function () {
            echo "hi";
        }
    ]);
};

$loop(function ($data) {
   echo $data["i"];
   echo $data["domore"]();
});

Simply returns, 2hi, as expected. This seems like strange behavior to me (someone coming from javascript) so I would appreciate some sort of justification. Note that this code serves no real life purpose so good or bad practice has no influence here. Think educational.

Edit: Laravel does exactly what I want giving me the notion that it is not impossible but I simply implemented it incorrectly in PHP:

DB::table('users')
    ->join('contacts', function ($join) {
        $join->on('users.id', '=', 'contacts.user_id')->orOn(...);
    })->get();