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(PHP 4 >= 4.2.0, PHP 5 <= 5.0.5, PHP 7)
dio_close — Closes the file descriptor given by fd
$fd
)
The function dio_close() closes the file descriptor
fd
.
fd
The file descriptor returned by dio_open() .
没有返回值。
Example #1 Closing an open file descriptor
<?php
$fd = dio_open ( '/dev/ttyS0' , O_RDWR );
dio_close ( $fd );
?>