Programatically scoping Eloquent models ...?

scoping.php

<?php

class PostService {

    /**
     * @param array $scopes
     *
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function buildScopedQuery(array $scopes = []): Builder
    {

        $query = Post::newQuery();

        foreach ($scopes as $scope) {
            if (is_string($scope)) {
                $query->{$scope}();
            } else {
                $parameters = $scope;
                $scope = array_shift($parameters);
                $query->{$scope}(...$parameters);
            }
        }

        return $query;
    }
}

usage.php

<?php

$postService = new PostService;  // or whatever via DI, etc.

$posts = $postService->buildScopedQuery([
  'popular',
  'active',
  ['ofType','admin']
])->get();