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

Checks if resource is a directory.

Checks if a file is readable.

Checks if a file or directory is writable.

Gets the file’s last access time.

Gets the file modification time.

Gets the file size (in bytes).

Sets the access and modification times of a file.

Creates a directory.

Deletes a directory.

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

Gets the file’s group.

Copies a file.

Moves a file.

Deletes a file or directory.

Checks if a file or directory exists.