Files: wp-admin/includes/class-wp-filesystem-ftpext.php

Checks if resource is a directory.

Connects filesystem.

Checks if a file is readable.

Reads entire file into a string.

Reads entire file into an array.

Writes a string to a file.

Gets the current working directory.

Changes current directory.

Changes filesystem permissions.

Gets the file owner.

Gets the permissions of the specified file or filepath in their octal format.

Sets the access and modification times of a file.

Creates a directory.

Gets the file owner.

Deletes a directory.