why this PHP and SQL code with HTML ( drop-down) select item do nothing? : <p>I write this code to retrieve data from the database table and insert the data in "select" drop-down menu, the below code do nothing and the select list empty, the table contains records. I guess there is something wrong with the code. any help? </p>

<pre><code>&lt;select  class = "input100" name="C_Number"  placeholder=" Select Course Number"&gt;
    &lt;span class="focus-input100"&gt;&lt;/span&gt;
    &lt;span class="symbol-input100"&gt;
    &lt;i class="fa fa-envelope-o" aria-hidden="true"&gt;&lt;/i&gt;
      &lt;?php 
         $Query = "SELECT * FROM `courses`";
         $CrPost = mysqli_query($db,$Query) Or die($Query);
         $post = mysqli_fetch_array($CrPost,MSQL_ASSOC);
         do { ?&gt;                          
        &lt;option value="&lt;?php echo $post['C_ID'];?&gt;"&gt;&lt;?php echo $post['C_Title']; ?&gt;&lt;/option&gt;
    &lt;?php } while ($post = mysqli_fetch_array($rsPost,MSQL_ASSOC)); ?&gt; 
    &lt;/span&gt;  &lt;/select&gt;
</code></pre>
