西宁（Xinjiang）是中国的一个地区，而PHP（超文本预处理器）是一种广泛使用的开源脚本语言，尤其在服务器端编程中。如果你想在西宁地区或者任何地方使用PHP高效地操作数据库，你可以遵循以下最佳实践：

1. **使用PDO（PHP Data Objects）**：PDO是一个数据库访问层，它提供了一种一致的方法来访问不同的数据库系统。使用PDO可以提高代码的可移植性和安全性。

```php
$pdo = new PDO('mysql:host=yourhost;dbname=yourdb', 'yourusername', 'yourpassword');
```

2. **准备SQL语句**：使用PDO的`prepare`方法准备SQL语句，这样可以防止SQL注入攻击。

```php
$stmt = $pdo->prepare('SELECT * FROM users WHERE id = :id');
$stmt->bindParam(':id', $id, PDO::PARAM_INT);
$stmt->execute();
```

3. **使用事务**：如果你需要执行一系列数据库操作，并且这些操作需要要么全部成功要么全部失败，那么可以使用事务。

```php
$pdo->beginTransaction();
try {
// 你的数据库操作
$pdo->commit();
} catch (Exception $e) {
$pdo->rollBack();
throw $e;
}
```

4. **优化SQL语句**：确保你的SQL语句是高效的，避免使用SELECT *，尽量使用索引，避免不必要的函数调用等。

5. **使用缓存**：对于频繁访问的数据，可以使用缓存来减少数据库的负担。可以使用APC、Redis、Memcached等作为缓存后端。

6. **避免使用SQL函数**：在WHERE子句中避免使用SQL函数，因为它们会阻止索引的使用。

7. **使用索引**：确保你的表中有合适的索引。

8. **避免不必要的对象和字符串创建**：尽量重用变量和避免不必要的字符串连接。

9. **使用数据库特有的功能**：了解并使用你所使用的数据库特有的功能，比如MySQL的``````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````