title: How to escape hidden form values in PHP
body: <p>I know these:</p>
  
  <ol>
  <li><p><strong>For HTML text : <a href="https://stackoverflow.com/questions/46483/htmlentities-vs-htmlspecialchars">htmlentities() or htmlspecialchars()</a></strong>
   <br>
   When outputting plain visible text within HTML para/div tags.</p></li>
  <li><p><strong>For URL-encoded values : <a href="https://stackoverflow.com/questions/5662249/php-url-encoding-decoding">urlencode()</a></strong>
   <br>
  When sending data to a function in PHP that expects URL encoded values.</p></li>
  </ol>
  
  <p>I dont know this:</p>
  
  <ol start="2">
  <li><strong>For HTML form values : ??</strong>
   <br>
  When outputting hidden data within HTML <code>&lt;input value="DATA"&gt;</code> tags.</li>
  </ol>