title: Post excerpt doesnt work
body: <p>Hello stackoverflow people, I need help. I'm using wordpress and somehow I can't use this function:</p>
  
  <pre><code>$post_id = 12;
      echo get_post($post_id)-&gt;post_excerpt;
  </code></pre>
  
  <p>Somehow it prints nothing. Here is the full div. Can you help me to solve this problem?</p>
  
  <pre><code>                &lt;div id="block1"&gt;
                      &lt;div class="inblock1"&gt;
                          &lt;h2&gt;About boots&lt;/h2&gt;
                          &lt;p&gt;&lt;?php $post_id = 12;
  echo get_post($post_id)-&gt;post_excerpt; ?&gt; &lt;/p&gt;
                          &lt;a href="/about-boots/" class="rodykle"&gt;apac&lt;/a&gt;
                      &lt;/div&gt;
                  &lt;/div&gt;
  </code></pre>