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: 이 확장은 » PECL 저장소로 옮겨졌으며, 더 이상 PHP로 제공되지 않습니다.5.1.0.
This extension is only available on Windows Platforms as of PHP 5.0.0