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By Michael Reynolds
on May 10, 2001


PHP is being used more and more as a tool for building e-commerce
applications. A necessary part of most e-commerce applications is the
ability to accept credit card payment in real-time, and PHP handles this
facet of online shopping with ease — with a little help.
This article will explain how to use PHP with Anacom. Anacom is a popular
online credit card processor with a fairly friendly interface. You can read
more about Anacom at http://www.anacom.com.


The first thing you will need to do is install curl. Curl is a little
program that allows secure posting to web sites via the command line. This
is necessary because PHP allows unencrypted socket connections but has no
built-in functions for making encrypted connection (via SSL). This is where
curl comes in. Curl can be obtained at http://curl.haxx.se. Note that OpenSSL (http://www.openssl.org) will also need to
be installed for curl to post via SSL if no RPM or binary package of
SSL-enabled curl is available for your platform. Curl can be installed
anywhere and has been successfully tested on dedicated servers and virtual
servers. Either ask your hosting provider to install curl with SSL or
install it yourself. Documentation is readily available on the curl web