function file_save_data

file_save_data($data, $destination = NULL, $replace = FILE_EXISTS_RENAME)

Saves a file to the specified destination and creates a database entry.

Parameters

string $data: A string containing the contents of the file.

string|null $destination: (optional) A string containing the destination URI. This must be a stream wrapper URI. If no value or NULL is provided, a randomized name will be generated and the file will be saved using Drupal's default files scheme, usually "public://".

int $replace: (optional) The replace behavior when the destination file already exists. Possible values include:

• FILE_EXISTS_REPLACE: Replace the existing file. If a managed file with the destination name exists, then its database entry will be updated. If no database entry is found, then a new one will be created.
• FILE_EXISTS_RENAME: (default) Append _{incrementing number} until the filename is unique.
• FILE_EXISTS_ERROR: Do nothing and return FALSE.

Return value

\Drupal\file\FileInterface|false A file entity, or FALSE on error.

See also

file_unmanaged_save_data()

File

core/modules/file/file.module, line 491

Defines a "managed_file" Form API field and a "file" field for Field module.

Code

function file_save_data($data, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
  $user = \Drupal::currentUser();

  if (empty($destination)) {
    $destination = file_default_scheme() . '://';
  }
  if (!file_valid_uri($destination)) {
    \Drupal::logger('file')->notice('The data could not be saved because the destination %destination is invalid. This may be caused by improper use of file_save_data() or a missing stream wrapper.', array('%destination' => $destination));
    drupal_set_message(t('The data could not be saved because the destination is invalid. More information is available in the system log.'), 'error');
    return FALSE;
  }

  if ($uri = file_unmanaged_save_data($data, $destination, $replace)) {
    // Create a file entity.
    $file = File::create([
      'uri' => $uri,
      'uid' => $user->id(),
      'status' => FILE_STATUS_PERMANENT,
    ]);
    // If we are replacing an existing file re-use its database record.
    // @todo Do not create a new entity in order to update it. See
    //   https://www.drupal.org/node/2241865.
    if ($replace == FILE_EXISTS_REPLACE) {
      $existing_files = entity_load_multiple_by_properties('file', array('uri' => $uri));
      if (count($existing_files)) {
        $existing = reset($existing_files);
        $file->fid = $existing->id();
        $file->setOriginalId($existing->id());
        $file->setFilename($existing->getFilename());
      }
    }
    // If we are renaming around an existing file (rather than a directory),
    // use its basename for the filename.
    elseif ($replace == FILE_EXISTS_RENAME && is_file($destination)) {
      $file->setFilename(drupal_basename($destination));
    }

    $file->save();
    return $file;
  }
  return FALSE;
}