What is the common usage of setcookie() in PHP?

The common usage of setcookie() in PHP is to set a cookie with a specified name, value, expiration time, path, domain, and secure flag. This function is often used to store user-specific information on the client-side browser for future visits to the website.

// Set a cookie with name 'user' and value 'JohnDoe' that expires in 1 hour
setcookie('user', 'JohnDoe', time() + 3600, '/');