Question

i’ve read the cookies tutorial on w3schools BUT i do not fully understand it so i’ve come to ask this question over here to know more about it. Let’s say we have two buttons, an UP button and a DOWN button, when the user clicks on either one of the buttons (and the cookie will be set here), both the buttons will be unclickable until that user clears his/her cookies. Any idea on how to do that?

Answer 1

You control the cookies as you control the $_REQUEST, $_POST, $_GET and $_SESSION arrays using $_COOKIES.

You can set teh cookie with the function:

setcookie("CookieName", $value, time()+3600, $path, $domain);

And you can clear or get the cookie value acessing the $_COOKIE array:

echo $_COOKIE["CookieName"];
echo $HTTP_COOKIE_VARS["CookieName"];
print_r($_COOKIE);
unset($_COOKIE["CookieName"]);

Or use the function above:

setcookie("CookieName", '');

After that you can make something like that in the page:

OffButton

if($_COOKIE["CookieName"]!=1){
       echo "disabled";
    } 

OnButton

 if($_REQUEST["buttonname"]==1){
       echo "enabled";
    }