'PHP / JS - Firefox Cookies Expires not set

This is the way how I set cookies in JavaScript:

function setCookie(cname, cvalue) {

    expires = "expires=2147483647";

    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/"+";" +";samesite=None" + ";secure=true";
}

This is the way how I set cookies in PHP:

function setMyCookie($name, $value) {
    $t = 2147483647;

    setcookie($name, $value, [
        'expires' => $t,
        'path' => '/',
        'samesite' => 'None',
        'secure' =>  true     
    ]);
    
}

Works on Chrome: Expires / Max age is set correctly.

Does NOT Works on Firefox: Expires / Max age is set NOT correctly. When I close the browser (=session is done), the cookies are deleted.

How can I set cookies also in Firefox properly?

Thanks, BlueMatrix



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