1) { $query_count = min($_GET['queries'], 500); } $statement = $pdo->prepare('SELECT randomNumber FROM World WHERE id=?'); $update = ''; while ($query_count--) { $id = mt_rand(1, 10000); $statement->execute([$id]); $world = ['id' => $id, 'randomNumber' => $statement->fetchColumn()]; $world['randomNumber'] = mt_rand(1, 10000); $update .= "UPDATE World SET randomNumber={$world['randomNumber']} WHERE id=$id;"; $arr[] = $world; } $pdo->exec($update); return json_encode($arr, JSON_NUMERIC_CHECK); }