http://help.usaepay.com/developer/phplibrary
The USAePay PHP library is a class for running transactions on the USAePay gateway. Its feature set roughly follows the transaction api. If you are looking for more features, take a look at soap api.
If you have any questions on the use of this library, please contact the developer integration support department: devsupport@usaepay.com 866-872-3729 x706
For more documentation on using the library, please see http://help.usaepay.com/developer/phplibrary
-PHP 4.3.x or higher (http://www.php.net)
-HTTPs streams support in PHP or -Curl/ssl module installed (http://curl.haxx.se/)
This package includes a test script "verify_install.php" that can be used to verify that your PHP installation is capable of using this library. Make sure to modify the script to include the correct path to the library. Then place the script in web accessable directiory and access it from a web browser. If any problems are detected, follow the on screen instructions.
<?php
include "usaepay.php";
$tran=new umTransaction;
$tran->key="AAAAABBBBBBCCCCCCDDDDDDEEEEEEEE";
$tran->card="4444555566667779";
$tran->exp="1214";
$tran->amount="5.00";
if($tran->process())
{
echo "Transaction Approved!";
} else {
echo "Transaction Failed: " . $tran->error;
}