等待命令完成使用PHP中的SSH2_Shell [英] Waiting for command to finish using SSH2_Shell in PHP

问题描述

我有一个在PHP中运行的SSH2_Shell会话.我的问题是，我需要一个命令才能完全完成，然后再移至下一个命令.到目前为止，这是我的代码:

I have an SSH2_Shell session working in PHP. my issue is that i need a command to completely finish before moving onto the next command. Here is my code so far:

    $command_capture = "cd /mnt/NADS/scripts/";
    $command_capture2 = "./tcpdump.sh $capture_name $sleep";


    if (!($connection = ssh2_connect("172.20.1.18", 22))) {
        echo "fail: unable to establish connection";
    } 
    if (!ssh2_auth_password($connection, "root", "Hideandseek")) {
        echo "fail: unable to authenticate";
    }
    $stream = ssh2_shell($connection);

    fwrite($stream, $command_capture. PHP_EOL);
    sleep(1);
    fwrite($stream, $command_capture2 . PHP_EOL);
    sleep(5);
    $data="";
    while($buf = stream_get_contents($stream)){
        $data.=$buf;
    }
    echo $data;
    fclose($stream);

tcpdump.sh脚本正在运行lftp命令，但是没有足够的时间来完成.我不能使用睡眠，因为它可能需要比指定的时间更长的时间，如果只需要几秒钟，我就不想让用户等待.我没有像我那样实现stream_set_blocking的运气，它似乎冻结了我的浏览器.

the tcpdump.sh script is running a lftp command but is not being given anough time to complete. I cant use sleep as it may take longer then the specified time and i dont want to make the user wait if it only needs a few seconds. I have not had luck implementing stream_set_blocking as when i do, it seems to freeze up my browser.

总的来说，我需要一种方法来检测命令何时完成并移至下一个命令.

overall, I need a way to detect when a command has finished and move into the next command.

提前谢谢！

推荐答案

感谢这些想法，但我想我已经解决了.当命令完成时，我回显了一些特殊字符，然后我将使用strpos()搜索这些字符.我认为可能有帮助的另一件事是调整php.ini文件中的max_execution_time设置.我在这里找到了答案:

Thanks for the ideas but I think I got it solved. I did an echo of a few special characters when the command finished and then I would search for the characters using strpos(). Another thing I think may have helped was adjusting the max_execution_time setting in the php.ini file. I found that answer here:

http://verysimple.com/2006/03/30/fatal-error-maximum-execution-time-of--30-seconds-exceed/

这是我的新代码

    $data="";
    while (true){
        $data .= stream_get_contents($stream);
        if (strpos($data,"XOXO") !== false) {
            echo "okay: command finished\n";
            break;
        }
    }
    echo $data;
    fclose($stream);

这篇关于等待命令完成使用PHP中的SSH2_Shell的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！