How to solve the logic problem of this block of php code?

In this piece of code, I get what the url is sending and save the parameters in variáveis to later pass them to a function .

if(isset($_GET['funcao']) && $_GET['funcao'] == 'lereresponder'){
    if (!empty($_GET['tipo']) && 
        !empty($_GET['funcao']) &&
        $_GET['funcao'] == 'lereresponder'){

        $id = $_GET['id'];
        $tipo = $_GET['tipo'];

        lerresponder($id, $tipo);

    }
}

In this next code that is function I'm getting the parameters with the intention of building a view through a query to the database using the parameters caught.

function lerresponder($id, $tipo){

    global $pdo;

    echo $id . '<br>';
    echo $tipo . '<br>';

}

Well, I'm getting the arguments from if(isset($_GET['funcao']) ... in function to query the database.

Question 1:

Does the way I'm passing these parsions to function

Question 2: How to call this function? Thus: lereresponder($id, $tipo) ?

Putting the code and the file where I call function , I repeated the lerresponder($id, $tipo); 3 times statement and it bothered me.

Question 3: Is this code correct?