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>XXIII. Direct IO functions</H1
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> 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
(<A
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>, <A
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>fread()</B
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>,..). The use
of the DIO functions should be considered only when direct
control of a device is needed. In all other cases, the standard
<A
HREF="ref.filesystem.html"
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> functions are more
than adequate.
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> To get these functions to work, you have to configure PHP with
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> One resource type is defined by this extension:
a file descriptor returnded by <A
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><DT
><A
HREF="function.dio-close.html"
>dio_close</A
> -- Closes the file descriptor given by fd</DT
><DT
><A
HREF="function.dio-fcntl.html"
>dio_fcntl</A
> -- Performs a c library fcntl on fd</DT
><DT
><A
HREF="function.dio-open.html"
>dio_open</A
> --
Opens a new filename with specified permissions of flags and
creation permissions of mode
</DT
><DT
><A
HREF="function.dio-read.html"
>dio_read</A
> --
Reads n bytes from fd and returns them, if n is not specified,
reads 1k block
</DT
><DT
><A
HREF="function.dio-seek.html"
>dio_seek</A
> -- Seeks to pos on fd from whence</DT
><DT
><A
HREF="function.dio-stat.html"
>dio_stat</A
> --
Gets stat information about the file descriptor fd
</DT
><DT
><A
HREF="function.dio-tcsetattr.html"
>dio_tcsetattr</A
> --
Sets terminal attributes and baud rate for a serial port
</DT
><DT
><A
HREF="function.dio-truncate.html"
>dio_truncate</A
> --
Truncates file descriptor fd to offset bytes
</DT
><DT
><A
HREF="function.dio-write.html"
>dio_write</A
> --
Writes data to fd with optional truncation at length
</DT
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