system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FILE_EXISTS_RENAME)
Attempts to get a file using Guzzle HTTP client and to store it locally.
Parameters
string $url: The URL of the file to grab.
string $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://".
bool $managed: If this is set to TRUE, the file API hooks will be invoked and the file is registered in the database.
int $replace: Replace behavior when the destination file already exists:
- FILE_EXISTS_REPLACE: Replace the existing file.
- FILE_EXISTS_RENAME: Append _{incrementing number} until the filename is unique.
- FILE_EXISTS_ERROR: Do nothing and return FALSE.
Return value
mixed One of these possibilities:
- If it succeeds and $managed is FALSE, the location where the file was saved.
- If it succeeds and $managed is TRUE, a \Drupal\file\FileInterface object which describes the file.
- If it fails, FALSE.
File
- core/modules/system/system.module, line 1371
- Configuration system that lets administrators modify the workings of the site.
Code
function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FILE_EXISTS_RENAME) { $parsed_url = parse_url($url); if (!isset($destination)) { $path = file_build_uri(drupal_basename($parsed_url['path'])); } else { if (is_dir(drupal_realpath($destination))) { // Prevent URIs with triple slashes when glueing parts together. $path = str_replace('///', '//', "$destination/") . drupal_basename($parsed_url['path']); } else { $path = $destination; } } try { $data = (string) \Drupal::httpClient() ->get($url) ->getBody(); $local = $managed ? file_save_data($data, $path, $replace) : file_unmanaged_save_data($data, $path, $replace); } catch (RequestException $exception) { drupal_set_message(t('Failed to fetch file due to error "%error"', array('%error' => $exception->getMessage())), 'error'); return FALSE; } if (!$local) { drupal_set_message(t('@remote could not be saved to @path.', array('@remote' => $url, '@path' => $path)), 'error'); } return $local; }
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