php code for urls shortner not working, page not redirecting

Question

I am using this code to create a urlshortner, that if a user from US visit the link he will be redirected to some page and if a user from any other country visit the link he will be redirected to some other page. It is not giving me any errors but not working either.

<?php
$con = mysqli_connect("localhost","root","");
if (!$con){
   die('Could not connect: ' . mysql_error());
}
mysqli_select_db($con, "shortenedurls"); //Replace with your MySQL DB Name

$de= mysqli_real_escape_string($con, $_GET["decode"]);

$sql = 'select * from short_urls where shorturl="$de"';
$urlid = mysqli_query($con,'SELECT id FROM short_urls WHERE shorturl="$de"');

$result=mysqli_query($con, 'SELECT * FROM redirect WHERE urlid="$urlid" LIKE "%US%"') or die(mysqli_error($con));
if(mysqli_num_rows($result) == 0 ) {
    $result1 = mysqli_query($con, 'SELECT * FROM short_urls WHERE shorturl="$de"');
    while($row = mysqli_fetch_array( $result1)) {
        $res=$row['urlinput'];
        header("location:".$res);
    }
} else {
    while($row = mysqli_fetch_array( $result)) {
        $res=$row['urlinput1'];
        header("location:".$res);
    }
}
?>

Answer 1

"$de" 

will not resolve correctly as it's also within single quotes; and they take precedence. Swap single and double quotes and that issue is fixed.

For example

$urlid = mysqli_query($con,"SELECT id FROM short_urls 
                            WHERE shorturl='$de'");

Also this query is syntactically incorrect

$result=mysqli_query($con, "SELECT * FROM redirect 
                            WHERE urlid='$urlid' LIKE '%US%'") 

Should be

$result=mysqli_query($con, "SELECT * FROM redirect 
                            WHERE urlid IKE '%US%'")