PHP supports the direct io functions as described in the Posix
Standard (Section 6) for performing I/O functions at a lower
level than the C-Language stream I/O functions
(fopen(), fread(),..). The use
of the DIO functions should be considered only when direct
control of a device is needed. In all other cases, the standard
filesystem functions are more
than adequate.
Note:
This extension has been moved to the PECL repository and is no longer bundled with
PHP as of PHP 5.1.0.
This extension is only available on Windows Platforms as of PHP 5.0.0
