web.xml

<web-app>

  <servlet>
    <servlet-name>quercus</servlet-name>
    <servlet-class>com.caucho.quercus.servlet.GoogleQuercusServlet</servlet-class>
    <init-param>
      <param-name>ini-file</param-name>
      <param-value>WEB-INF/php.ini</param-value>
      <param-name>compile</param-name>
      <param-value>true</param-value>
    </init-param>
  </servlet>
  
  <servlet-mapping>
    <url-pattern>*.php</url-pattern>
    <servlet-name>quercus</servlet-name>
  </servlet-mapping>

</web-app>