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

Checks if a file or directory exists.

Reads entire file into a string.

Reads entire file into an array.

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

Gets the file’s group.

Checks if resource is a directory.

Checks if resource is a file.

Checks if a file is readable.

Checks if a file or directory is writable.