Code:
       <form method='POST' action='profil.php' enctype='multipart/form-data'>
                                    Ime slike &nbsp;&nbsp;&nbsp; 
                                    <input type="text" name="imeslike"><br>
                                            <input type="file" name="image"/><br /><br />
                                            <input type="submit" value="Potvrdi" name="submit">
                                                </form>

Code:
      if (isset($_POST['submit'])) {
                                    require_once '../includes/Korisnik.php';

                                    $imeslike = $_POST["imeslike"];
                                    $slika = $_FILES['image']['name'];
                                    $slika_temp = $_FILES['image']['tmp_name'];

                                if (empty($slika) && empty($imeslike)) {
                                        echo $errors[] = 'you should fill the area.';
                                    }
                                    if (empty($errors) === true) {
                                        $object=new Korisnik();
                                        $object->uploadslike($imeslike, $slika, $slika_temp);
                                    }
                                }

Code:

    public function uploadslike($imeslike, $slika, $slika_temp) {

move_uploaded_file(isset($slika_temp), "slike/".$slika);
        $id = $this->connection->lastInsertId();
        
        
        $sql="INSERT INTO slike VALUES (:id,:imeslike,:idkorisnika,:slika)";
        
        $stmt=  $this->connection->prepare($sql);
        $stmt->bindParam(":id",$id,  PDO::PARAM_INT);
        $stmt->bindParam(":imeslike",$imeslike,  PDO::PARAM_STR);
        $stmt->bindParam(":idkorisnika",$_SESSION["id"],  PDO::PARAM_INT);
        $stmt->bindParam(":slika",$slika,  PDO::PARAM_STR);
        $stmt->execute();}