How to make an execute request?

Question

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There are too many requests in the code, so you need to redo it in execute. I just don't know how to do it. Prompt how to alter in execute.
Here is the method.

$groupinfo = $main->requestVkAPI('groups.getById', "group_ids={$d['id_group']}&access_token={$_SESSION['access_token']}");

I get data like this:

$groupinfo[0]['photo_50'];
$groupinfo[0]['name'];