title: How to set the default checked value of a Zend_Form Radio Element?
body: <p>I have a radio element with two options. I want to set one as the default value in case the user forgets to check it. How can I do this?</p>
  <h2>Solution:</h2>
  <pre><code>$this-&gt;addElement('radio', 'choose', array(
      'required'   =&gt; true,
      'multiOptions' =&gt; array(
          'yes' =&gt; 'heck yes',
          'no' =&gt; 'please no'
      ),
      'value' =&gt; 'yes' //key of multiOption
  ));
  </code></pre>