backdrop_dirname in includes/file.inc

Gets the name of the directory from a given path.

backdrop_rmdir in includes/file.inc

Removes a directory.

backdrop_tempnam in includes/file.inc

Creates a file with a unique filename in the specified directory.

backdrop_unlink in includes/file.inc

Deletes a file.

file_download in includes/file.inc

Page callback: Handles private file transfers.

file_prepare_directory in includes/file.inc

Checks that the directory exists and is writable.

file_save_upload in includes/file.inc

Saves a file upload to a new location.

file_stream_wrapper_get_instance_by_uri in includes/file.inc

Returns a reference to the stream wrapper class responsible for a given URI.

file_stream_wrapper_uri_normalize in includes/file.inc

Normalizes a URI by making it syntactically correct.

file_transfer in includes/file.inc

Transfers a file to the client using HTTP.

file_valid_uri in includes/file.inc

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

image_gd_save in modules/system/image.gd.inc

GD helper to write an image resource to a destination file.

image_style_deliver in modules/image/image.module

Menu callback; Given a style and image path, generate a derivative.

StreamWrapperTest::testGetValidStreamScheme in modules/simpletest/tests/file.test

Test the scheme functions.