If you want to add a PayPal hidden field such as :
<input type=”hidden” name=”page_style” value=”first_style”>
which defines the style layout for payPal, then you have to add it to the/ipn/process.php file after the line
<form method=”post” name=”paypal_form” action=”https://www.paypal.com/cgi-bin/webscr”>
PHP-eSeller is a PHP / mySQL application that you install onto your web site and interacts with PayPal or Google Checkout to automatically sell digital files. When the customer makes a purchase, the process of delivering the files is automatic and so provides a 24 / 7 solution.
Once PHP-eSeller is purchased, there are no additional fees for the application, except fees that you pay to PayPal and Google Checkout. The purchase of PHP-eSeller is a one time purchase.
It can be used to see any type of digital download. See
http://www.withinweb.com/phpeseller/usersites.php
which lists some of the sites that are using the application.
This describes how to set up the SMTP email for use with PHP-eSeller, PHP-SecureArea, PHP-KeyCodes.
You may find that you web server is not sending out emails as well as you would like. Shared web servers sometimes have issues with how quickly the email is sent out and the headers in the emails.
To use an external SMPT service all you have to do is change the config.php file.
If you look at the config.php file there are some settings near the bottom of the page which should explain it.
$smtpuse = false; //set to true if you are going to use smtp
$smtphost = “smtp_server_host_here”; //The smtp host that you are using
$smtpusername = “smtp_user_name_here”; //Your smtp username
$smtppassword = “smtp_passord_here”; //Your smtp password
You change the smtpuser to true and you need a host name, username and password for the SMTP service.