How can the "session.use_trans_sid" function in PHP affect HTML validation?

When "session.use_trans_sid" is enabled in PHP, it appends the session ID to the URLs in the HTML output. This can cause HTML validation issues because URLs with session IDs may not be considered valid HTML syntax. To solve this issue, you can disable "session.use_trans_sid" in your PHP configuration or use cookies to manage sessions instead.

// Disable session.use_trans_sid in PHP configuration
ini_set('session.use_trans_sid', 0);