ssh2_fetch_stream

    (PECL ssh2 >= 0.9.0)

    ssh2_fetch_stream — Fetch an extended data stream

    Description

    ssh2_fetch_stream(resource $channel, int $streamid): resource

    Fetches an alternate substream associated with an SSH2 channel stream. The SSH2 protocol currently defines only one substream, STDERR, which has a substream ID of SSH2_STREAM_STDERR (defined as 1).

    Parameters

    channel

    streamid

    An SSH2 channel stream.

    Return Values

    Returns the requested stream resource.

    Examples

    Example #1 Opening a shell and retrieving the stderr stream associated with it

    <?php
    $connection     = ssh2_connect('shell.example.com', 22);
    ssh2_auth_password($connection, 'username', 'password');

    $stdio_stream = ssh2_shell($connection);
    $stderr_stream = ssh2_fetch_stream($stdio_stream, SSH2_STREAM_STDERR);
    ?>

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    User Contributed Notes 4 notes

    up
    7
    ingo at baab dot de
    4 years ago
    In addition to the last post (13 years ago) from Dennis K. I corrected two typos (constant SSH2_STREAM_STDIO was misspellt) and removed (too many) brackets - this code works:

    <?php
    $stdout_stream     = ssh2_exec($connection, "lsssss -la");

    $sio_stream = ssh2_fetch_stream($stdout_stream, SSH2_STREAM_STDIO);
    $err_stream = ssh2_fetch_stream($stdout_stream, SSH2_STREAM_STDERR);

    stream_set_blocking($sio_stream, true);
    stream_set_blocking($err_stream, true);

    $result_dio = stream_get_contents($sio_stream);
    $result_err = stream_get_contents($err_stream);

    echo     'stderr: ' . $result_err;
    echo     'stdio : ' . $result_dio;
    ?>
    up
    -1
    Ricardo Striquer (ricardophp yohoocombr)
    17 years ago
    I got a friend using those functions and he was not able to use this ssh2_fetch_stream function. First of all I got the ssh2_shell sample by webmaster at spectreanime dot com, but this function does not work with his sample, i believe thats because he use fwrite instead of ssh2_shell or ssh2_exec to run the command.

    This sample below is to run under a command line and is fully functional. note that i add the sleep as advised by webmaster at spectreanime dot com

    <?php
    echo "Connexion SSH ";
    if (!(    $connection=@ssh2_connect("69.69.69.69", 22))) {
    echo     "[FAILED]\n";
    exit(    1);
    }
    echo     "[OK]\nAuthentification ";

    if (!@    ssh2_auth_password($connection,"root","YourPassword")) {
    echo     "[FAILED]\n";
    exit(    1);
    }
    echo     "[OK]\n";

    $stdout_stream = ssh2_exec($connection, "/bin/lssss -la /tmp");
    sleep(1);
    $stderr_stream = ssh2_fetch_stream($stdout_stream, SSH2_STREAM_STDERR);

    echo     "Erros encontrados!\n------------\n";
    while(    $line = fgets($stderr_stream)) { flush(); echo $line."\n"; }
    echo     "------------\n";

    while(    $line = fgets($stdout_stream)) { flush(); echo $line."\n";}

    fclose($stdout_stream);
    ?>
    up
    -1
    hexer
    16 years ago
    I successfully used fgets in PHP4

    examples

    <?php
    $stderr     = fgets(ssh2_fetch_stream($channel, SSH2_STREAM_STDERR), 8192);

    $str = fgets(ssh2_fetch_stream($channel, SSH2_STREAM_STDIO), 8192);
    ?>
    up
    -2
    Dennis K.
    17 years ago
    In addition to the last post from Ricardo Striquer:

    Simple block the stream with stream_set_blocking(), and you dont have to sleep() the script...

    <?php
    stdout_stream     = ssh2_exec($connection, "/bin/lssss -la /tmp");

    $err_stream = ssh2_fetch_stream($stdout_stream, SSH2_STREAM_STDERR);

    $dio_stream = ssh2_fetch_stream($stdout_stream, SSH2_STREAM_STDDIO);

    stream_set_blocking($err_stream, true);
    stream_set_blocking($dio_stream, true);

    $result_err = stream_get_contents($err_stream));
    $result_dio = stream_get_contents($dio_stream));
    ?>
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