title: laravel5.3 incorrect format of URL when getting from database
body: <p>I save URLs inside my database.
  They are saved correctly, for example this URL is saved inside the db.</p>
  
  <pre><code>http://xy.com/raw/mhhxKh7Q
  </code></pre>
  
  <p>Now when I try to use this for a JSON based API:</p>
  
  <pre><code>         return response()-&gt;json([
                  'url'  =&gt; $merchant-&gt;url
              ]);
  </code></pre>
  
  <p>I get something like this:</p>
  
  <pre><code>http:\/xy.com\/raw\/mhhxKh7Q
  </code></pre>
  
  <p>How to fix this?</p>