How to calculate difference of two string dates in days using PHP?
<p>I have two date variables:</p>

<pre><code>$dnow = "2016-12-1";
$dafter = "2016-12-11";
</code></pre>

<p>I want to calculate the difference of this two dates which are in string format so how do I calculate?
I used </p>

<pre><code>date_diff($object, $object2)
</code></pre>

<p>but it expecting two date object, and I have dates in <strong>String</strong> format
, After using <code>date_diff</code> I get following error</p>

<blockquote>
  <p>Message: Object of class DateInterval could not be converted to string.</p>
</blockquote>