counting queries in payload

[usefksa]

Is there any way to count how many query exist inside payload (root query)?

like here

{
  user(username: "root") {
    id
    username
  }
  user(username: "root2") {
    id
    username
  }
  user(username: "root3") {
    id
    username
  }
}

The total here should be 3. I want to know how may query exists to prevent malicious queries (example, repeating the above query for thousands times.

[usefksa]

I fixed it here is the code for that

 $parser  = new Parser();
        $request = new Request($parser->parse($payload), $variables);
        $countQueriesAndMutations=count($request->getQueries()) + count($request->getMutations());