(PHP 4 >= 4.2.0, PHP 5 < 5.1.0)
dio_close — Closes the file descriptor given by fd
$fd
) : void
The function dio_close() closes the file descriptor
fd.
没有返回值。
Example #1 Closing an open file descriptor
<?php
$fd = dio_open('/dev/ttyS0', O_RDWR);
dio_close($fd);
?>