https://www.w3schools.com/pHP/func_network_setrawcookie.asp
PHP setrawcookie() Function
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
phpfunction
https://www.php.net/manual/en/function.setrawcookie.php
PHP: setrawcookie - Manual
Send a cookie without urlencoding the cookie value
phpmanual