idontlikeit.php

<?php
session_start();
if(isset($_GET['id'])) {
            $conn = new mysqli('localhost', 'People', '123456', 'main');
            if ($conn->connect_error) die($conn->connect_error);
            $emailfor = str_replace('.', '', $_SESSION['email']);
            $emailfor = str_replace('@', '', $emailfor);
            $_GET['id'] = (int)$_GET['id'];
            $_GET['id'] = strip_tags($_GET['id']);
            $_GET['id'] = htmlspecialchars($_GET['id']);
            $_GET['id'] = addslashes($_GET['id']);
            $query = "SELECT login from news WHERE id='".$_GET['id']."'"; 
            $result = $conn->query($query);
            $result->data_seek(0);
            $login = $result->fetch_array()['login'];
            $query = "INSERT into dislike(login,noteid,who) VALUES('".$_SESSION['login']."','".$_GET['id']."','".$login."')"; 
            $result = $conn->query($query);
    }
?>