title: Regex for http-equiv="refresh" meta tag
body: <p>I need a regexp in PHP to find a the http-equiv="refresh" meta tag in a URL. What I need is the actual URL to follow. Now, as far as I know there are two valid ways to use this meta tag:</p>
  
  <pre><code>content="0; url=urlhere" http-equiv="refresh" /&gt;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>http-equiv="refresh" content="0; url=urlhere"/&gt;
  </code></pre>
  
  <p>Thanks!</p>