What are PHP cookie functions and how do I use them?

What are PHP cookie functions and how do I use them?

PHP cookie functions are used to set, retrieve, and delete cookies in a web application. They allow you to store user preferences and session data.

Can you show me how to set a cookie in PHP?

Sure! You can set a cookie using the setcookie() function. For example: setcookie('user', 'John', time() + 3600); This sets a cookie named 'user' with the value 'John' that expires in one hour.

How do I retrieve the value of a cookie?

You can retrieve a cookie value using the $_COOKIE superglobal. For example: echo $_COOKIE['user']; will output 'John' if the cookie is set.

What if I want to delete a cookie?

To delete a cookie, you can use the setcookie() function again with the same name and set the expiration time to a past time. For example: setcookie('user', '', time() - 3600);.