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# dio_close

(PHP 4 >= 4.2.0, PHP 5 <= 5.0.4)

dio_close -- Closes the file descriptor given by fd

## Description

void dio_close ( resource fd )

The function dio_close() closes the file descriptor fd.

## Parameters

fd

  The file descriptor returned by dio_open().

## Return Values

No value is returned.

## Examples

Example 1. Closing an open file descriptor

`<?php $fd = dio_open('/dev/ttyS0', O_RDWR); dio_close($fd); ?>`

## See Also

dio_open()

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