如何删除网站生成的所有路径的所有cookie

I by mistake generate one cookie. which is now affecting my website. it generates in all the path of my website. because I set it up in a header file.

Now I want to delete that cookie once for all the paths.

setcookie('PHPSESSID','xyz',time()+800000);

I can able to delete only one cookie which set on path / but I can't delete all other cookies which set on different paths from logout.php file

When deleting a cookie you should assure that the expiration date is in the past, to trigger the removal mechanism in your browser.

setcookie('PHPSESSID','',time()-3600);