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

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

Converts *nix-style file permissions to a octal number.

Determines if the string provided contains binary characters.

Creates a directory.

Deletes a directory.

Gets details for files in a directory or a specific file.

Moves a file.

Deletes a file or directory.

Checks if a file or directory exists.

Checks if resource is a file.

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.