How can the missing </select> tag in the PHP code affect the functionality of the dropdown menu?

The missing </select> tag in the PHP code will cause the dropdown menu to not display properly or function as expected. The </select> tag is necessary to close off the dropdown menu element and without it, the browser may not render the menu correctly. To fix this issue, simply add the </select> tag at the end of the dropdown menu code.

&lt;select name=&quot;dropdown&quot;&gt;
  &lt;option value=&quot;option1&quot;&gt;Option 1&lt;/option&gt;
  &lt;option value=&quot;option2&quot;&gt;Option 2&lt;/option&gt;
  &lt;option value=&quot;option3&quot;&gt;Option 3&lt;/option&gt;
&lt;/select&gt;