Is it advisable to start a session for every user in PHP, or are there specific use cases where this approach should be avoided?

It is generally advisable to start a session for every user in PHP to maintain user state across multiple pages. However, there may be specific use cases where starting a session for every user is not necessary, such as when dealing with high traffic websites where session management can become a bottleneck.

// Start a session for every user
session_start();

// Your PHP code goes here