title: How to find Informix Client SDK for Ubuntu
body: <p>I am a beginner on Informix database and I need to connect to Informix databases using PHP code.
  I succeeded to download <code>php_pdo_informix</code> tar file but during installation, it requires Informix Client SDK includes by sending this error line :</p>
  
  <blockquote>
    <p>checking for includes and libraries... configure:<br>
    error: Cannot find Informix Client SDK includes in /opt/informix/inc/cli"</p>
  </blockquote>
  
  <p>then I am not able to find the right place to download this Informix Client SDK in other to proceed with the configuration</p>
  
  <p>Can anyone help?</p>