How can PHP developers prevent token overwriting in their code?

To prevent token overwriting in PHP code, developers can use the PHP session mechanism to securely store and manage tokens. By storing tokens in session variables, developers can ensure that each user has a unique token associated with their session, preventing overwriting or conflicts. 

// Start session
session_start();

// Generate a unique token
$token = bin2hex(random_bytes(16));

// Store token in session variable
$_SESSION['token'] = $token;

// Retrieve token from session
$token = $_SESSION['token'];

Keywords

PHP token overwriting security session management CSRF protection

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