title: VS Code highlighted all my wordpress function name
body: <p>I am using PHP Intelephense(version 1.3.7) which is the latest version and my VS Code is up to date
  There was no problem before but a few days ago, it keeps on highlighted all my wordpress function name
  I tried to downgrade my PHP Intelephense but the situation still exist..
  Any help will be appreciate</p>
  
  <p><a href="https://i.stack.imgur.com/bgoKe.png" rel="noreferrer"><img src="https://i.stack.imgur.com/bgoKe.png" alt="enter image description here"></a></p>