How can PHP developers ensure the security of sessions and cookies in their applications?

To ensure the security of sessions and cookies in PHP applications, developers should use secure session handling techniques such as using HTTPS, setting secure flags on cookies, and properly validating and sanitizing user input. 

// Enable secure session handling
ini_set('session.cookie_secure', 1);
ini_set('session.cookie_httponly', 1);
session_start();

// Set secure flag on cookies
setcookie('cookie_name', 'cookie_value', time() + 3600, '/', 'example.com', true, true);

Keywords

session hijacking secure flag HTTPOnly flag CSRF protection encryption

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