1. drupal
    1. 8
    2. 7
7 – 8 system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FILE_EXISTS_RENAME)

Attempts to get a file using drupal_http_request and to store it locally.


$url The URL of the file to grab.

$destination Stream wrapper URI specifying where the file should be placed. If a directory path is provided, the file is saved into that directory under its original name. If the path contains a filename as well, that one will be used instead. If this value is omitted, the site's default files scheme will be used, usually "public://".

$managed boolean If this is set to TRUE, the file API hooks will be invoked and the file is registered in the database.

$replace boolean Replace behavior when the destination file already exists:

Return value

On success the location the file was saved to, FALSE on failure.

▾ 2 functions call system_retrieve_file()

RetrieveFileTestCase::testFileRetrieving in modules/system/system.test
Invokes system_retrieve_file() in several scenarios.
update_manager_file_get in modules/update/
Copies a file from $url to the temporary directory for updates.


modules/system/system.module, line 3420

function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FILE_EXISTS_RENAME) {
  $parsed_url = parse_url($url);
  if (!isset($destination)) {
    $path = file_build_uri(basename($parsed_url['path']));
  else {
    if (is_dir(drupal_realpath($destination))) {
      // Prevent URIs with triple slashes when glueing parts together.
      $path = str_replace('///', '//', "$destination/") . basename($parsed_url['path']);
    else {
      $path = $destination;
  $result = drupal_http_request($url);
  if ($result->code != 200) {
    drupal_set_message(t('HTTP error @errorcode occurred when trying to fetch @remote.', array('@errorcode' => $result->code, '@remote' => $url)), 'error');
    return FALSE;
  $local = $managed ? file_save_data($result->data, $path, $replace) : file_unmanaged_save_data($result->data, $path, $replace);
  if (!$local) {
    drupal_set_message(t('@remote could not be saved to @path.', array('@remote' => $url, '@path' => $path)), 'error');

  return $local;