[FAQer]

$userIP = $_SERVER["REMOTE_ADDR"];  
//$userIP = filter_var( $userIP, FILTER_VALIDATE_IP );
$mydb = @ new mysqli('localhost','root','','questiondb');
if (mysqli_connect_errno()) {
    echo "Conection error:".mysqli_connect_error();
    exit();
 }
 
 $userIP = $mydb->real_escape_string($userIP);
 $mydb->query("INSERT INTO ipt (ip) VALUES ('$userIP')");
  
 
 $result_set  = $mydb->query('SELECT ip FROM ipt');
 
    while($row = $result_set->fetch_assoc()) {
    print_r($row); 
    echo"<br />";
        }
 
 $result_set->close();
 $mydb->close(); 

Everything works now . Here is the final code . Data goes in and out . Thank you people . This was very helpful!