SessionIdInterface::create_sid

Function name: SessionIdInterface::create_sid()

Applicable version: PHP 7.1.0 and above

Function Description: SessionIdInterface::create_sid() function is used to generate a new session ID.

Usage example:

 <?php // 创建一个实现SessionIdInterface 接口的类class CustomSessionId implements SessionIdInterface { public function create_sid(): string { // 生成一个新的会话ID $sid = // 自定义生成会话ID 的逻辑return $sid; } } // 创建一个新的会话对象，并设置会话ID 生成器为自定义的实现类$session = new SessionHandler(); $session->setSessionIdInterface(new CustomSessionId()); // 开启会话$session->start(); // 获取当前会话ID $sid = session_id(); echo "当前会话ID：{$sid}"; ?>

Notes:

• The SessionIdInterface::create_sid() function must return a string as the session ID.
• Custom session ID generation logic should ensure that the generated ID is unique for the same session cycle.
• Before using the SessionIdInterface::create_sid() function, the session must be started with the session_start() function.

In the above example, we created a custom class CustomSessionId that implements the SessionIdInterface interface, where the create_sid() method is used to generate a new session ID. We then create a new session object and set the session ID generator to a custom implementation class through the setSessionIdInterface() method. Finally, the current session ID is obtained through the session_id() function and output it to the browser.

Note that the custom session ID generation logic in the example needs to be implemented according to actual requirements to ensure that the generated ID is unique within the same session cycle.