function system_retrieve_file

Attempts to get a file using drupal_http_request 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

modules/system/system.module, line 3534

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;
        }
    }
    $result = drupal_http_request($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;
}