title: how to handle multiple select's selection
body: <p>This supposedly simple but for some reason i cant figure out the value of a multiple select.</p>
  
  <p>Here is an example: </p>
  
  <pre><code>&lt;form action="" method="post"&gt;
      &lt;select name="cars" multiple="multiple"&gt;
        &lt;option value="volvo"&gt;Volvo&lt;/option&gt;
        &lt;option value="saab"&gt;Saab&lt;/option&gt;
        &lt;option value="opel"&gt;Opel&lt;/option&gt;
        &lt;option value="audi"&gt;Audi&lt;/option&gt;
      &lt;/select&gt;
      &lt;input type="submit" /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>Now in the php side i am trying to <code>echo</code> or <code>print_r($_POST['cars'])</code>;</p>
  
  <p>However it doesnt print an array it only prints one value from the picked options.</p>