title: Get cart id on prestashop
body: <p>I'm trying to get the current cart id from prestashop with:</p>
  
  <pre><code>$cookie-&gt;id_cart;
  </code></pre>
  
  <p>But it's blank until I add a product in the cart.</p>
  
  <p>Is there any option to create that cart so I can get the id?</p>
  
  <p>Thanks.</p>