Cookies are content records put away on the customer PC and they are kept of utilization following reason. PHP straightforwardly bolsters HTTP cookies.
There are three stages associated with distinguishing returning clients −
Server content sends an arrangement of cookies to the program. For instance name, age, or distinguishing proof number and so forth.
Program stores this data on neighborhood machine for sometime later.
At the point when next time program sends any demand to web server then it sends those cookies data to the server and server utilizes that data to distinguish the client.