title: PHP system() command doesn't to work on localhost
body: <p>I have this code:</p>
  
  <pre><code>&lt;?php
  system('shutdown -s');
  ?&gt;
  </code></pre>
  
  <p>It works just fine, shuts down my localhost and everything. But this doesn't lock the computer:</p>
  
  <pre><code>&lt;?php    
  system('Rundll32.exe System32\User32.dll,LockWorkStation');
  ?&gt;
  </code></pre>
  
  <p>Why doesn't it work?</p>