What resources or documentation can help understand and address cross-site-cookie warnings in PHP?

Cross-site cookie warnings occur when cookies are being set or accessed across different domains, which can lead to security vulnerabilities. To address this issue in PHP, you can use the "SameSite" attribute when setting cookies to restrict them to the same site origin. Example PHP code snippet: 

// Set cookie with SameSite attribute
setcookie('cookie_name', 'cookie_value', [
    'expires' => time() + 3600,
    'path' => '/',
    'domain' => 'example.com',
    'secure' => true, // Set to true if using HTTPS
    'httponly' => true,
    'samesite' => 'Strict' // Restrict cookie to same site origin
]);

Keywords

PHP cross-site cookies documentation security web development

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