Description:
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I have a page that refreshes every minute. In that page, I open an ssh session and obtain data. There is no way to close the ssh connection. On reload, php opens a new connection but does not terminate the last one or reuse the existing one.
Running a NETSTAT command reveals numerous connections in the CLOSE_WAIT status after several minutes.
Can a close SSH option be included?

Reproduce code:
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<?php
$connection = ssh2_connect('myserver',22);
ssh2_auth_password($connection,'username','password');
$stream = ss2_exec($connection,'df -k',FALSE);
stream_set_blocking($stream, TRUE);
$output = fread($stream,4096);
fclose($stream);
echo $output;
?>

Expected result:
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Connection should show nothing

Actual result:
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netstat -a shows

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TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
TCP     myweb:xxxx      myserver:22         CLOSE_WAIT
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