What are sessions and cookies in PHP?

In the architecture, sessions are global variables that are kept on the server. Each session is assigned a unique server ID, which is later utilized to interact with value storage and retrieval.

In the architecture, cookies are entities that are used to identify distinct users. It’s a tiny file that the server downloads and installs on the client’s computer. This is done in order to obtain important information from the client in order to improve the server’s different features.