What are some common mistakes to avoid when creating links with sessionid values in PHP?

When creating links with sessionid values in PHP, it is important to avoid exposing sensitive session information in URLs, as this can lead to security vulnerabilities such as session hijacking. To prevent this, you should use session cookies instead of passing session ids in URLs. This can be achieved by setting the session.use_cookies configuration option to true in your php.ini file.

// Set session.use_cookies to true in php.ini
session.use_cookies = 1;