title: How to set selected value of HTML select box with PHP
body: <p>I have a next piece of the template:</p>
  
  <pre><code>&lt;select name="interest"&gt;
      &lt;option value="seo"&gt;SEO и Блоговодство&lt;/option&gt;
      &lt;option value="auto"&gt;Авто&lt;/option&gt;
      &lt;option value="business"&gt;Бизнес&lt;/option&gt;
      &lt;option value="design"&gt;Дизайн&lt;/option&gt;
      ...
  </code></pre>
  
  <p>and store resulting value in <code>$result['interest']</code>.</p>
  
  <p>How can I mark <code>option</code> element as selected with PHP?</p>
  
  <p>Thanks!</p>