title: Taking integer value from URL using PHP
body: <p>I have this dummy URL : <a href="http://blahblah.co.uk/node/57?url=/Installer/Manufacturer/17/Schuco" rel="nofollow">http://blahblah.co.uk/node/57?url=/Installer/Manufacturer/17/Schuco</a></p>
  
  <p>I need the number "17" from this URL in order to query the database.</p>
  
  <p>I have looked into using "isset()" but am not sure it is the right approach.</p>
  
  <p>Can someone show me how to strip this URL down?</p>
  
  <p>Thanks</p>
  
  <p>This is what I have so far:</p>
  
  <pre><code>$url = $_GET['url'];
  echo $url;
  </code></pre>