title: PHP URL GET parameters inside URL parameter
body: <p>I am developing facebook/myspace content share buttons.  The Facebook link takes you to a URL on my website, but I need to pass additional parameters to my URL along with the parameters passed to facebook.  Here's my example:</p>
  
  <pre><code>http://www.facebook.com/share.php?t=MyCompany&amp;u=http://foobar.com/test7.php?Share=161&amp;FbShare=Facebook28
  </code></pre>
  
  <p>Do I need to escape something inside the "u" parameter?  </p>