These functions interface the MCVE (Monetra) API (libmonetra, 
     formerly known as libmcve), allowing you
     to work directly with MCVE/Monetra from your PHP scripts.  
     MCVE/Monetra is Main Street Softworks' solution to direct
     credit/debit/gift card processing for Linux/Unix/MacOSX/Windows
     ( http://www.mainstreetsoftworks.com/ ).
     It lets you directly address the credit card clearing houses via
     your *nix box, modem and/or internet connection (bypassing the
     need for an additional service such as Authorize.Net or Pay
     Flow Pro).  Using the MCVE/Monetra module for PHP, you can process
     credit cards directly through MCVE/Monetra via your PHP scripts.
     The following references will outline the process.
    
Note: 
      MCVE/Monetra is the replacement for RedHat's CCVS. They contracted with
      RedHat in late 2001 to migrate all existing clientele to the
      MCVE platform.
     
Note: 
      This extension has been moved to the PECL repository and is no longer bundled with 
PHP as of PHP 5.1.0.
     
Note: This extension is not
available on Windows platforms.
  To enable MCVE (Monetra) Support in PHP, first verify your LibMonetra
  (formerly libmcve) installation directory.  If you are compiling 
  MCVE/Monetra support directly into PHP, you will then need to configure
  PHP with the --with-mcve option.  If you
  use this option without specifying the path to your libmonetra installation,
  PHP will attempt to look in the default LibMonetra Install location
  (/usr/local). If Monetra (MCVE) is in a non-standard
  location, run configure with: --with-mcve=$mcve_path, where $mcve_path
  is the path to your MCVE/Monetra installation.  Please note that
  MCVE/Monetra support requires that $mcve_path/lib and $mcve_path/include
  exist, and include mcve.h or 
  monetra.h under the include directory and
  libmcve.so and/or libmcve.a 
  and/or libmonetra.so and/or 
  libmonetra.a under the lib directory.
 
  If you want to install MCVE/Monetra support as a module, you can do
  so by using the PECL repository, and issuing the  'pecl install mcve'
  command if you are running a PEAR version of at least 1.4.0.
 
  Since MCVE/Monetra has true server/client separation, there are no
  additional requirements for running PHP with MCVE support.  To test
  your MCVE/Monetra extension in PHP, you may connect to 
  testbox.monetra.com on port 8333 for IP, or port 8444 for SSL using
  the MCVE/Monetra PHP API.
  Use 'vitale' for your username, and 'test' for your password.
  Additional information about test facilities are available at
  http://www.mainstreetsoftworks.com/.