title: Illegal string offset in Laravel
body: <p>I'm using Laravel, and it complains about $header inside the Form::text being a illegal string offset, how do I fix this? It doesn't complain if I go straight into the page, but if I submit a form with get method going into the page. I searched around and maybe it thinks $header is an array?</p>
  
  <pre><code>&lt;?php 
          $header = null;
          if(isset($_GET["header"])) {
              $header = $_GET["header"];
          }
  
          echo Form::text('header', $header, array('class'=&gt;'form-control', 'placeholder'=&gt;'Tittel'));
  ?&gt;
  </code></pre>