Introduction

Requirements

These functions are available as part of the standard module, which is always available.

Installation

There is no installation needed to use these functions, they are part of the PHP core.

Runtime Configuration

This extension does not define any configuration directives.

Resource Types

Predefined Constants

This extension does not define any constants.

See Also

For related functions such as dirname(), is_dir(), mkdir(), and rmdir(), see the Filesystem section.