สอบถามอัพโหลดไฟล์บน server แต่ติด Permission denied PHP

foreach ($_FILES['formFile']['tmp_name'] as $key => $tmp_name) {
                                $file_name = $_FILES['formFile']['name'][$key];
                                $file_ext = pathinfo($file_name, PATHINFO_EXTENSION);
                                $new_name = time() . '_' . $key . '.' . $file_ext;
                                $target_dir = "../images/uploads/";
                                $target_file = $target_dir . basename($new_name);
                                move_uploaded_file($tmp_name, $target_file);
                                $file_names[] = $new_name;
                            }

<div class="col-md-3 col-sm-12">
                  <label for="formFile" ><b>แนบไฟล์ :</b></label>
                  <input class="" type="file" id="formFile" name="formFile[]" multiple>
                </div>

$stmt = $conn->prepare("INSERT INTO SOHD (Img) 
                                                VALUES(?)"); // ?
                            $params = array(implode(',', $file_names)
                                            );
                            $stmt->execute($params);