What best practices should be followed when storing and retrieving search parameters in PHP sessions?

When storing and retrieving search parameters in PHP sessions, it is important to sanitize and validate the input to prevent any security vulnerabilities. It is also recommended to store only necessary information in the session to avoid bloating the session data. Additionally, using encryption or hashing techniques can add an extra layer of security to protect sensitive information. 

// Storing search parameters in PHP session
$_SESSION['search_params'] = [
    'keyword' => filter_var($_POST['keyword'], FILTER_SANITIZE_STRING),
    'category' => filter_var($_POST['category'], FILTER_SANITIZE_STRING),
    // Add more parameters as needed
];

// Retrieving search parameters from PHP session
$search_params = $_SESSION['search_params'];

// Clearing search parameters from PHP session after use
unset($_SESSION['search_params']);

Keywords

PHP sessions storing retrieving search parameters security data persistence

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