function file_create_url

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7 file.inc file_create_url($uri)
4.6 file.inc file_create_url($path)
4.7 file.inc file_create_url($path)
5 file.inc file_create_url($path)
6 file.inc file_create_url($path)
8 file.inc file_create_url($uri)

Creates a web-accessible URL for a stream to an external or local file.

Compatibility: normal paths and stream wrappers.

There are two kinds of local files:

  • "managed files", i.e. those stored by a Drupal-compatible stream wrapper. These are files that have either been uploaded by users or were generated automatically (for example through CSS aggregation).
  • "shipped files", i.e. those outside of the files directory, which ship as part of Drupal core or contributed modules or themes.

Parameters

$uri: The URI to a file for which we need an external URL, or the path to a shipped file.

Return value

A string containing a URL that may be used to access the file. If the provided string already contains a preceding 'http', 'https', or '/', nothing is done and the same string is returned. If a stream wrapper could not be found to generate an external URL, then FALSE is returned.

See also

http://drupal.org/node/515192

Related topics

34 calls to file_create_url()
ColorTestCase::_testColor in modules/color/color.test
Tests the Color module functionality using the given theme.
DrupalTestCase::verbose in modules/simpletest/drupal_web_test_case.php
Logs verbose message in a text file.
drupal_build_css_cache in includes/common.inc
Aggregates and optimizes CSS files into a cache file in the files directory.
drupal_get_js in includes/common.inc
Returns a themed presentation of all JavaScript code for the current page.
drupal_pre_render_styles in includes/common.inc
#pre_render callback to add the elements needed for CSS tags to be rendered.

... See full list

File

includes/file.inc, line 372
API for handling file uploads and server file management.

Code

function file_create_url($uri) {
  // Allow the URI to be altered, e.g. to serve a file from a CDN or static
  // file server.
  drupal_alter('file_url', $uri);

  $scheme = file_uri_scheme($uri);

  if (!$scheme) {
    // Allow for:
    // - root-relative URIs (e.g. /foo.jpg in http://example.com/foo.jpg)
    // - protocol-relative URIs (e.g. //bar.jpg, which is expanded to
    //   http://example.com/bar.jpg by the browser when viewing a page over
    //   HTTP and to https://example.com/bar.jpg when viewing a HTTPS page)
    // Both types of relative URIs are characterized by a leading slash, hence
    // we can use a single check.
    if (drupal_substr($uri, 0, 1) == '/') {
      return $uri;
    }
    else {
      // If this is not a properly formatted stream, then it is a shipped file.
      // Therefore, return the urlencoded URI with the base URL prepended.
      return $GLOBALS['base_url'] . '/' . drupal_encode_path($uri);
    }
  }
  elseif ($scheme == 'http' || $scheme == 'https') {
    // Check for HTTP so that we don't have to implement getExternalUrl() for
    // the HTTP wrapper.
    return $uri;
  }
  else {
    // Attempt to return an external URL using the appropriate wrapper.
    if ($wrapper = file_stream_wrapper_get_instance_by_uri($uri)) {
      return $wrapper->getExternalUrl();
    }
    else {
      return FALSE;
    }
  }
}

Comments

Expecting this function to behave more closely to how it did in Drupal 6? Try combining it with file_build_uri() like this:

<?php
$file_uri
= file_create_url(file_build_uri('images/example.jpeg'));
?>

For private files at least. You will need to implement hook_file_download() to allow the file to be downloaded. Otherwise you will get a file not found page.