In this example, we are generating a random CSRF token using a secure random number generator, and storing it in the user's session. We then include the CSRF token as a hidden input field in the form. When the form is submitted, the value of the CSRF token is also submitted, and we can compare it to the value stored in the user's session to ensure that the form was submitted from a legitimate source. PHP Form CSRF is often implemented using third-party libraries, such as Symfony or Laravel, which provide built-in CSRF protection features. These libraries handle the generation and verification of CSRF tokens automatically, making it easier for developers to implement CSRF protection in their web applications.