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.
Opmerking: Deze module is niet verkrijgbaar voor de windows versie van PHP.
Deze functies zijn beschikbaar als onderdeel van de standarad module die altijd beschikbaar is.
One resource type is defined by this extension: a file descriptor returned by dio_open().