title: Only allowing selection of one radio button in a form with PHP
body: <p>A very basic question...</p>
  
  <p>How can I only allow the selection of one option in a list of radio buttons?</p>
  
  <pre><code>&lt;form action="process_repair.php" method="POST"&gt;
      &lt;label for "repair_complete"&gt;Repair complete&lt;/label&gt;
      &lt;input type="radio" name="Yes" value="true"&gt;
      &lt;input type="radio" name="No" value="false"&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>When this code runs, it's possible to select both radio buttons, but I'd like them to interact so you can only select one or the other.</p>
  
  <p>Any help much appreciated! :)</p>