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Evaluating a SSH2 stream using PHP

Posted on 2010-08-25
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Medium Priority
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Last Modified: 2012-05-10
Hi Experts,

I am  trying to evaluate the result of a SSH2 stream so I can  branch to another section of my code based on the output.  The connection to the server is working fine and I get the output but the evaluation does not work.

The section of code that does not work is:

if ($data == 'pierre' ) {
   echo "Welcome";
}

Can you please have a look?

Thanks

Pierre-Alex

P.S. I am running

phpinfo()
PHP Version => 5.2.9
-------------- My code ---------------

// Set the command to execute

$command = 'whoami';

// Connect 
if ($ssh = ssh2_connect('192.168.108.201', 22))  {

	//Authenticate
	if(ssh2_auth_password($ssh, 'pierre' ,  'password')) { 

		//exec a command and return a stream
		$stream = ssh2_exec($ssh, $command);

		// force PHP to wait for the output
		stream_set_blocking($stream, true);

		// read the output into a variable
		$data = '';
		while($buffer = fread($stream, 4096)) 
		    $data .= $buffer;
	}

// close the stream
fclose($stream);



// print the response
echo $data;

//evaluate the result
if ($data == 'pierre' ) {
   echo "Welcome";
}

}

 echo "End";

--------- What I get is  ----------------

pierre
End

--------- What I should get is  ----------------

pierre
Welcome
End

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Question by:pierre-alex
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4 Comments
 
LVL 2

Accepted Solution

by:
dfendig earned 2000 total points
ID: 33518863
$data probably contains the EOF character, otherwise you wouldnt get the carriage return on the two echo statements.
Try $data = substr($data,0,-1); to remove the possible EOF char.
0
 
LVL 2

Expert Comment

by:dfendig
ID: 33518911
or try this
while (!feof($stream)) {
  $data .= fread($stream, 4096);
}
0
 

Author Closing Comment

by:pierre-alex
ID: 33518956
Thanks. That worked !

Is there a way to print the EOF character  (for troubleshooting purposes)
0
 

Author Comment

by:pierre-alex
ID: 33518974
dfendig

Just so you know I got a "time out" message with the other option :

or try this
while (!feof($stream)) {
  $data .= fread($stream, 4096);
}

Rgds

Pierre
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