delete_cookie()

delete_cookie($name[, $domain = ''[, $path = '/'[, $prefix = '']]])

Lets you delete a cookie. Unless you’ve set a custom path or other values, only the name of the cookie is needed.

delete_cookie('name');

This function is otherwise identical to set_cookie(), except that it does not have the value and expiration parameters. You can submit an array of values in the first parameter or you can set discrete parameters.

delete_cookie($name, $domain, $path, $prefix);