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like the ones embedded in TCLink. It may be unlawful to download TCLink
in these countries.


                                TCLink v4.5.0
                             PHP Implementation
                       copyright (C) TrustCommerce 2019-2020
                         http://www.trustcommerce.com
                         techsupport@trustcommerce.com

                              February 17, 2020

I. DESCRIPTION

  TCLink is a thin client library to allow your servers to
connect to the TrustCommerce payment gateway easily and consistently.
The protocol (which is the same across all platforms and languages) is
well-documented in the TC Link API Developer Guide, so please consult it for
any questions you may have about the protocol syntax itself.

  If you are on a Windows environment, do not use this client.  Please
download the COM object and use the COM functions available for Windows
to access the TCLink object.  See here for more information:
	http://www.php.net/manual/en/ref.com.php

  TCLink was originally ported to PHP by Andrew Barnett of Data Clarity.
Thanks go to both him (for the code) and his business (for their support
of open source).


II. LICENSE

  TCLink for PHP is released under the GNU LGPL.  Please read LICENSE
for details.


III. REQUIREMENTS

  You must be running PHP 4.0.4pl1 or higher.

  You need to have the OpenSSL development libraries installed.  
It is recommended you use the most recent version provided by the
vendor for PCI reasons.


  Besides the normal PHP install, you'll need the php-devel package,
which contains files needed for building PHP modules.  You can tell
if this package is installed if the binary "phpize" is in your path.

 
IV. BUILDING

  At the root directory of this archive, execute the following:

    phpize
 
  Afterwards, type the following commands, distribution specific comments provided when available:

General Instructions:
    ./configure --with-ssl=[directory containing libssl.so]
    make

Debian Jessie:
Debian Stretch:
Debian Buster:
    ./configure --with-ssl=/usr/lib/x86_64-linux-gnu
    make

Centos 8.1.1911:
    ./configure --with-ssl=/usr/lib64
    make

  If you are not sure where your SSL library is installed, contact your system administrator or hosting provider
  for more information.
  
  If the module builds without errors and you have access to PHP at the command line, 
  you can test it with the following command:

    php -d extension=modules/tclink.so tctest.php

  This script will run a test transaction and print the results.

V. INSTALLATION

  If you have root access to the machine, you will probably want to
install TCLink as a global extension.  You can do this by copying the
module library (modules/tclink.so) to your PHP extensions directory
(typically /usr/lib/php*).  Your extensions directory is defined by the
"extension_dir" directive in php.ini.

  Edit php.ini (typically found somewhere in /etc) and add the following line:

    extension=tclink.so

  Restart your webserver, and all PHP scripts will have access to TCLink.

  If you can't or don't want to install the module system wide, you can
still load it manually in each script that needs to access it through
the dl() call.  Your system must be configured to allow dynamic loading of
modules for this to work; see your system administrator or hosting provider.


VI. USAGE

  The tctest.php script shows a simple example of running transactions
through the TCLink API.  A more complex example is contained in
tcexample.php.

  The curltest.php script shows a simple example of running transactions
through the HTTPS post, as described in the TC Link API Developer Guide.  It is 
provided here in as a conveinence to users who are unable to install
TCLink and have Curl available in their installation.  

VII. PLATFORMS

  The included code has been tested on the following platforms:

CentOS Linux release 8.1.1911 (Core)
        OpenSSL Version 1.1.1c-2 (Distribution), php-cli-7.2.11-2.module_el8.1.0+209+03b9a8ff.x86_64 (Distribution)
Debian Linux release 8.11
        OpenSSL Version 1.0.1t-1+deb8u12 (Distribution), PHP version 5.6.40+dfsg-0+deb8u8 (Distribution)
Debian Linux release 9.8
        OpenSSL Version 1.1.0l-1~deb9u1 (Distribution), PHP version 7.0.33-0+deb9u6 (Distribution)
Debian Linux release 10.3
        OpenSSL Version 1.1.1d-0+deb10u2 (Distribution), PHP version 7.3.11-1~deb10u1 (Distribution)