title: MCRYPT extension install in Ubuntu for XAMPP
body: <p>I am using Ubuntu and installed <a href="https://www.apachefriends.org/index.html" rel="nofollow noreferrer">XAMPP</a>. The problem is that I am getting the error</p>
  
  <blockquote>
    <p>Warning: Use of undefined constant MCRYPT_BLOWFISH</p>
  </blockquote>
  
  <p>I've tried many ways, but without success.</p>