What role does session persistence play in maintaining PHP variables across multiple requests?

Session persistence plays a crucial role in maintaining PHP variables across multiple requests by storing the variables in a session that persists across different pages. This allows the variables to be accessed and updated throughout the user's session on the website. 

// Start the session
session_start();

// Set a variable in the session
$_SESSION['username'] = 'JohnDoe';

// Access the variable in another page
session_start();
echo $_SESSION['username']; // Output: JohnDoe

Keywords

session persistence PHP variables multiple requests session management data storage

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