What is the correct parameter type expected by setcookie() in PHP?

The setcookie() function in PHP expects the parameter types to be string, int, bool, or null. If you encounter an issue with the parameter type, make sure that the values you are passing to setcookie() are of the correct type. If you need to pass an array or object, you should serialize the data before setting the cookie.

// Example of setting a cookie with correct parameter types
setcookie('cookie_name', 'cookie_value', time() + 3600, '/');