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

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

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

Gets the file’s group.

Copies a 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.

Reads entire file into an array.

Checks if a file is readable.

Writes a string to a file.

Checks if a file or directory is writable.

Gets the current working directory.

Gets the file’s last access time.