title: How to flush php curl's dns cache?
body: <p>PHP Curl has a dns cache, that is enabled by default:</p>
  
  <p>CURLOPT_DNS_USE_GLOBAL_CACHE</p>
  
  <p><a href="http://php.net/manual/en/function.curl-setopt.php">http://php.net/manual/en/function.curl-setopt.php</a></p>
  
  <p>I can't seem to find any resources on how to clear this cache (aside from apache restart).</p>