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

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.

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.

Changes current directory.

Gets the file modification time.

Changes the file group.

Gets the file size (in bytes).