title: exec() waiting for a response in PHP
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/3819398/php-exec-command-or-similar-to-not-wait-for-result">php exec command (or similar) to not wait for result</a>  </p>
  </blockquote>
  
  
  
  <p>I have a page that runs a series of <code>exec()</code> commands which forces my PHP script to halt alteration until it receives a response.  How can I tell <code>exec()</code> to not wait for a response and just run the command?</p>
  
  <p>I'm using a complex command that has a backend system I can query to check the status, so I'm not concerned with a response.</p>