It sounds like you are having an issue with the isset() function in PHP not working properly when checking for a session variable.
To build a RESTful API in PHP, you can use a framework such as Laravel or CodeIgniter, or you can build the API from scratch using core PHP.
Here is a general outline of how to implement token-based authentication in PHPFox:
In Laravel, you can use the unique validation rule to validate that an email address is unique when a user is updating their account.
To log out a user from HTTP authentication using PHP, you can use the header function to send a "WWW-Authenticate" header with a value of "Basic realm=realmName" and a 401 status code.
To check if a given username and password match those stored in a MySQL database, you can use a SQL SELECT statement with a WHERE clause.
PHP sessions can be shared across subdomains by setting the session cookie's domain to the top-level domain.
This error message typically indicates that the MySQL server is unable to authenticate the user 'root'@'localhost' with the provided password.