title: Laravel checking input isset
body: <p>Laravel Input helper has </p>
  
  <blockquote>
    <p>Input::has('debug')</p>
  </blockquote>
  
  <p>My problem is that I often use query parameter without the value such has <a href="http://example.com?debug" rel="nofollow">http://example.com?debug</a></p>
  
  <p>The problem is that Input::has('debug') will return false in this case because there is no value.  ie. debug=1</p>
  
  <p>So I end up having to use <code>isset($_GET['debug'])</code>.</p>
  
  <p>Is there a laravel way to check whether the input isset?</p>