php - PHP SSH检测流的结尾

我无法通过ssh连接检测流的结尾。这是我尝试的:

<pre><?php
if (!function_exists("ssh2_connect")) die("function ssh2_connect doesn't exist");
if(!($con = ssh2_connect("localhost", 22)))
    echo "fail: unable to establish connection\n";
else
    if(!$ssh = ssh2_auth_password($con, "viassh", "sshpass")) {
        echo "fail: unable to authenticate\n";
    }

        $sshStream = ssh2_shell($con, 'xterm', null, 80, 24, SSH2_TERM_UNIT_CHARS);
        $strCommand = 'cd /var/www/test';
        fwrite($sshStream, $strCommand . PHP_EOL);
        stream_set_blocking($sshStream, true);

        // infinite loop
        #$stderr_stream = fgets(ssh2_fetch_stream($sshStream, SSH2_STREAM_STDERR), 8192);
        #var_dump($stderr_stream);

        // infinite loop
        #var_dump(stream_get_contents($sshStream));

        $ret = "";
        while ($buf = fgets($sshStream)) {
            $ret .= $buf;

            // always false
            #$meta = stream_get_meta_data($sshStream);
            #var_dump($meta['eof']);

            // works
            if(strpos($buf, '$ cd ') !== false) break;
        }
        $strCommand = 'git status';
        fwrite($sshStream, $strCommand . PHP_EOL);
        stream_set_blocking($sshStream, true);
        while ($buf = fgets($sshStream)) {
            $ret .= $buf;
            if (strpos($buf, '-a') !== false) break;
        }
        fclose($sshStream);
        echo $ret;


?>

这给了我正确的输出:

Welcome to Ubuntu 12.04.1 LTS (GNU/Linux 3.2.0-32-generic-pae i686)

 * Documentation:  https://help.ubuntu.com/

20 packages can be updated.
0 updates are security updates.

Last login: Tue Oct 23 16:45:20 2012 from localhost

cd /var/www/test
]0;viassh@rcdev: ~viassh@rcdev:~$ cd /var/www/test
git status
]0;viassh@rcdev: /var/www/testviassh@rcdev:/var/www/test$ git status
# On branch develop
# Changes not staged for commit:
#   (use "git add ..." to update what will be committed)
#   (use "git checkout -- ..." to discard changes in working directory)
#
#   modified:   ssh_1.php
#   modified:   ssh_1.php~
#   modified:   ssh_shell.php
#   modified:   ssh_shell.php~
#
# Untracked files:
#   (use "git add ..." to include in what will be committed)
#
#   ssh_stream1.php
#   ssh_stream1.php~
no changes added to commit (use "git add" and/or "git commit -a")

但仅因为我知道流的最后一行。我尝试了feof()，但是也失败了。
所以希望有人可以帮助我。

最佳答案

似乎您可以使用phpseclib, a pure PHP SSH implementation轻松地做到这一点？

<?php
include('Net/SSH2.php');

$ssh = new Net_SSH2('www.domain.tld');
if (!$ssh->login('username', 'password')) {
    exit('Login Failed');
}

echo $ssh->exec('git status');
?>

也许我不明白您正在尝试做什么？