แสดงผลว่า Resource id #7 จากการอัพโหลดรูป คืออะไรคะ ใช่เออเร่อรึเปล่าคะ

define ('MAX_FILE_SIZE', 220 * 145);
	if (array_key_exists('upload', $_POST)) { 
	  define('UPLOAD_DIR', '../upload/product_cate/');
	  $file = str_replace(' ', '_', $_FILES['image']['name']);
	  $permitted = array('image/gif', 'image/jpeg', 'image/pjpeg','image/png');  
	  if (in_array($_FILES['image']['type'], $permitted)
		  && $_FILES['image']['size'] > 0 
		  && $_FILES['image']['size'] <= MAX_FILE_SIZE) {
		switch($_FILES['image']['error']) {
		  case 0:
        		// check if a file of the same name has been uploaded
        		if (!file_exists(UPLOAD_DIR . $file)) {
          			// move the file to the upload folder and rename it
				  $success =move_uploaded_file($_FILES['image']['tmp_name'], UPLOAD_DIR .$file);
				} else {
				  $result = 'A file of the same name already exists.';
				}
				if ($success) {
				  $result = "$file uploaded successfully.";
				} else {
				  $result = "Error uploading $file. Please try again.";
				}
			break;
			case 3:
			case 6:
			case 7:
			case 8:
				$result = "Error uploading $file. Please try again.";
			break;
			case 4:
				$result = "You didn't select a file to be uploaded.";
			}
		  } else {
			$result = "$file is either too big or not an image.";
	  }
	}