如果Cookie不等于变量，如何重定向

Question

I am struggling to redirect the user if the cookie does not equal a vairable. If it does equal the vairable, then it should continue the script. Here is my code to redirect :

if(empty($_GET)) {
    //No variables are specified in the URL.
    //Do stuff accordingly
    echo "No variables specified in URL...";
} else {
    //Variables are present. Do stuff:
    $id = htmlspecialchars($_GET["id"]);
    echo 'url query is ' . $id;
}

if(isset($_COOKIE['logged_in']) == $id)
{
    header("Location: test.php");
}
if(isset($_COOKIE['logged_in']) != $id)
{
    //continues the script

Please note that the vairable in the if statment ($id) is a vairable from the query of url; for example if the url is, "random.com/test.php?id=17" and the cookie equals 18 the script should redirect. However if url is, "random.com/test.php?id=17" and the cookie equals 17, then stay on the same page. Sorry if it sounds complecated.

It doesnt work as this code: It doesnt redirect no matter what the vairable equals. Thanks

Answer 1

you should add another condition.

 if(empty($_GET)) {
    //No variables are specified in the URL.
    //Do stuff accordingly
    echo "No variables specified in URL...";

} else {
    //Variables are present. Do stuff:
    $id = htmlspecialchars($_GET["id"]);
    echo 'url query is ' . $id;
}

if(isset($_COOKIE['logged_in']) && $_COOKIE['logged_in'] == $id)
{
    header("Location: test.php");
}
if(isset($_COOKIE['logged_in']) && $_COOKIE['logged_in'] != $id)
{
    //continues the script

or use this script

if(isset($_COOKIE['logged_in']))
{
   if($_COOKIE['logged_in']==$id){
       header("Location: test.php");
   }
   else{
       //another condition to equal is not equal so directly we can use else
       //continues the script
   }
} else {
echo "Cookie not valid or available";
// redirect user 
}