function file_valid_uri

Determines whether the URI has a valid scheme for file API operations.

There must be a scheme and it must be a Drupal-provided scheme like 'public', 'private', 'temporary', or an extension provided with hook_stream_wrappers().

Parameters

$uri: The URI to be tested.

Return value

TRUE if the URI is allowed.

Related topics

File

includes/file.inc, line 872

Code

function file_valid_uri($uri) {
    // Assert that the URI has an allowed scheme. Barepaths are not allowed.
    $uri_scheme = file_uri_scheme($uri);
    if (empty($uri_scheme) || !file_stream_wrapper_valid_scheme($uri_scheme)) {
        return FALSE;
    }
    return TRUE;
}