错误时Phpseclib执行不同的命令

Question

I am using Phpseclib 1.0 to execute multiple commands on remote server . I know how configure it to exit on error but is there any way to setup that if there is error it will stop and execute different commands ? For example I have 8 commands to execute when it all works it's don't show any output so it's all good . if for example after 4th command it gets error I need that it stop to execute the rest commands and execute command to delete what it did as well another command to run another script to notify admins about accident. The current code I using is

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

ini_set('display_errors', 1);
error_reporting(E_ALL);

$ssh = new Net_SSH2('host');
if (!$ssh->login('user', 'password')) {
    exit('Login Failed');
}
echo '<pre>' .   $ssh->exec('create vlan “TEST”') . '</pre>';
echo '<pre>' .   $ssh->exec('configure vlan TEST tag 666') . '</pre>';
echo '<pre>' .   $ssh->exec('configure vlan TEST add ports 8 untagged') . '</pre>';
echo '<pre>' .   $ssh->exec('create l2vpn vpws TEST fec-id-type pseudo-wire 666') . '</pre>';

// Execute on error
echo '<pre>' .   $ssh->exec('delete l2vpn vpws “TEST”') . '</pre>';
echo '<pre>' .   $ssh->exec('delete vlan “TEST”') . '</pre>';
?>

Answer 1

You could check stderr by doing $ssh->getStdError() and seeing if it's empty. There's also $ssh->getExitStatus().