SessionUpdateTimestampHandlerInterface::validateId

Function name: SessionUpdateTimestampHandlerInterface::validateId()

Applicable version: PHP 7.2.0 and above

Usage: This function is used to verify whether the session identifier (session ID) is valid. It is a built-in interface method in PHP and needs to be implemented in the class that implements the SessionUpdateTimestampHandlerInterface interface.

Example:

 <?php class MySessionHandler implements SessionUpdateTimestampHandlerInterface { public function validateId($session_id) { // 在这里编写自定义的会话标识符验证逻辑// 返回值必须是布尔类型，true表示会话标识符有效，false表示无效if ($session_id === 'valid_session_id') { return true; } else { return false; } } // 实现其他接口方法... } // 创建自定义的会话处理程序$handler = new MySessionHandler(); // 将自定义的会话处理程序注册为PHP的默认会话处理程序session_set_save_handler($handler, true); // 开启会话session_start(); // 使用会话标识符验证方法进行会话标识符验证$isValid = $handler->validateId(session_id()); if ($isValid) { echo "会话标识符有效"; } else { echo "会话标识符无效"; } // 关闭会话session_write_close(); ?>

Notes:

1. In order to use this function, the SessionUpdateTimestampHandlerInterface interface must be implemented first and registered as the default session handler when the session_set_save_handler() function is called.
2. In a custom session handler, the validateId() method needs to write session identifier verification logic according to actual needs and return a Boolean value.
3. In the example, we create a custom session handler called MySessionHandler and register it as the default session handler. Then, we use the validateId() method to verify whether the current session identifier is valid and output the corresponding message based on the verification result.

Hope the above examples are helpful to you!