Hier roep ik de functie aan:

	$testingggg = $database->hopethisworks();
        ?><pre><?php print_r($testingggg) ?> </pre><?php

Dit is de functie:

function hopethisworks(){
        $sql = "SELECT * FROM axle WHERE train_id = :train_id";
        $sth = $this->pdo->prepare($sql);
        $sth->bindParam(':train_id', $_GET['train_id'], PDO::PARAM_INT);
        $sth->execute();
        $res['axle'] = $sth->fetch(PDO::FETCH_ASSOC);

        $sql = "SELECT * FROM bogie WHERE train_id = :train_id";
        $sth = $this->pdo->prepare($sql);
        $sth->bindParam(':train_id', $_GET['train_id'], PDO::PARAM_INT);
        $sth->execute();
        $res['bogie'] = $sth->fetch(PDO::FETCH_ASSOC);

        return $res;
    }


Screen shot komt eraan!