What is causing the session cookie warning in PHP?

The session cookie warning in PHP is typically caused by not setting the session cookie parameters properly. To solve this issue, you need to explicitly set the session cookie parameters, such as the domain, path, secure, and httponly flags. 

// Set session cookie parameters
session_set_cookie_params([
    'lifetime' => 0,
    'path' => '/',
    'domain' => 'yourdomain.com',
    'secure' => true,
    'httponly' => true
]);

// Start the session
session_start();

Keywords

session cookie warning PHP configuration expiration

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