Are there specific PHP functions or modules that allow for persistent storage of data across multiple requests?

To achieve persistent storage of data across multiple requests in PHP, you can use sessions or cookies. Sessions store data on the server side and are accessible across multiple requests for the same user, while cookies store data on the client side and can be accessed by the server on subsequent requests. 

// Starting a session
session_start();

// Storing data in session
$_SESSION['username'] = 'JohnDoe';

// Accessing stored data
echo $_SESSION['username'];

Keywords

PHP persistent storage data functions modules

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