get result from ssh2_exec

Question

I have a script that makes a SSH connection to a server (this works fine). Now I want to execute a command and echo the result I get from this command.

So I do this:

$stream = ssh2_exec($conn, 'php -v');

but I can't get it to show the response, var_dump returns resource(3) of type (stream).

I have tried to use:

$stream = ssh2_exec($conn, 'php -v');
$stream_out = ssh2_fetch_stream($stream, SSH2_STREAM_STDERR);

but the $stream_out returns an empty string.

So is it possible to print the response as result of the script?

score 50 · Accepted Answer · answered Aug 23 '12 at 15:12

50

Ok i found the solution, so i post it for future reference

So to output the result of a command executed by ssh2_exec you should use following code setup

$stream = ssh2_exec($conn, 'php -v');
stream_set_blocking($stream, true);
$stream_out = ssh2_fetch_stream($stream, SSH2_STREAM_STDIO);
echo stream_get_contents($stream_out);

answered Aug 23 '12 at 15:12

acrobat

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I believe the call to ssh2_fetch_stream is unnecessary -- you could just use $stream. – S. Imp Jul 26 '17 at 22:41
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You can get the IO output of the stream without calling "ssh2_fetch_stream" but you cannot get the STDERR output. – Nonetallt Dec 04 '17 at 12:56

score 2 · Answer 2 · answered Aug 23 '12 at 07:20

2

add:

echo stream_get_contents($stream);

the result is the STREAM and you have to fetch it's contents first...

stream-fetch is only for fetching alternate sub-streams... (afaik)

answered Aug 23 '12 at 07:20

TheHe

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when i use the stream_get_contents the var_dump returns string(0) "", so does this mean, the exec command didn't execute or i'm returning the wrong stream – acrobat Aug 23 '12 at 07:59
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i found the solution and i will add it as answer as soon a stackoverflow let me post it! – acrobat Aug 23 '12 at 08:26
Can you post solution – Datadimension May 17 '17 at 19:18

get result from ssh2_exec

2 Answers2

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