title: Calculate remains date by custom fields date
body: <p>I'm building a website in WordPress with Advanced Custom Fields plugin. I've a date field <code>tender_deadline</code> which is contain the deadline date formatted by <code>d/m/y</code></p>
  <pre class="lang-php prettyprint-override"><code>$tender_deadline = get_field('tender_deadline');
  $today =  date(&quot;d/m/y&quot;);
  </code></pre>
  <p>Now I want to calculate how many days left from today. Suppose a deadline has been set to 01/01/2023. How I'll count days between today and this date? This will be automatic calculation based on the deadline date and today's date.</p>
  <p>How can I achieve this? Any php scripts there or any other solution for that?</p>