title: How to Subscription details from the wcs_get_subscriptions_for_order() function
body: <p>I have this variable:</p>
  <pre><code>$subscriptions = wcs_get_subscriptions_for_order($order_id, array('order_type' =&gt; 'parent'));
  </code></pre>
  <p>Using this print_r() I can see lots of data:</p>
  <pre><code>echo '&lt;pre&gt;';
  print_r($subscriptions);
  echo '&lt;/pre&gt;';
  </code></pre>
  <p>How can I get some specific data like when the next payment date, when a user purchased the product, which product etc?</p>
  <p>Is there any way?</p>