$query = "INSERT INTO news VALUES (NULL, :param1 , :param2  )";
$stmt = $pdo->prepare($query);

$params = array(
    "param1" => $p['title'],
    "param2" => $p['body'],
);

$data = $stmt->execute($params);

所以您可以这样做以获得最后插入的ID

so you can do like this to get last inserted Id

$last_id = $pdo->lastInsertId();