Club Drupal

/**

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

 *

 *   The URL of the file to grab.

 *   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://".

 *   If this is set to TRUE, the file API hooks will be invoked and the file is

 *   registered in the database.

 *   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.

 *

 */

function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FILE_EXISTS_RENAME) {

  $parsed_url = parse_url($url);