What are some best practices for passing data between pages in PHP to display detailed information based on user interactions?

When passing data between pages in PHP to display detailed information based on user interactions, it is best to use sessions or query parameters. Sessions can store data across multiple pages for a single user session, while query parameters can pass data through the URL. Both methods are secure and efficient ways to transfer information between pages. 

// Start a session to store data across multiple pages
session_start();

// Set a session variable to store the data
$_SESSION['user_id'] = 123;

// Retrieve the session variable on the next page
$user_id = $_SESSION['user_id'];

// OR pass data through query parameters
// URL: page2.php?user_id=123
$user_id = $_GET['user_id'];

Keywords

session variables GET parameters POST method form submission data validation

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