title: php function to convert %3c back to html
body: <p>I have a string that needs to be converted back to html. It's in this format:</p>
  
  <pre><code>%3cli%3e
  </code></pre>
  
  <p>which should be:</p>
  
  <pre><code>&lt;li&gt;
  </code></pre>
  
  <p>What php function can I use to convert this? Tried html_entity_decode() but that didn't work.</p>