paypal recurring payments form

Question

I have a website with a payment form, I want to add recurring payments. how would i do that? what ID's do I need to use in the form fields?

I saw a WordPress plugin that uses a3 t3 and p3 like so:

    <input type="hidden" name="a3" id="a3" value="" />
<p class="donate_recur"><label for="recur">Repeat Donation</label>
<select name="t3" id="t3">
                <option value="0"> Do not repeat </option> 
                 <option value="D"> Daily </option> 
                 <option value="W"> Weekly </option> 
                 <option value="M"> Monthly </option> 
                 <option value="Y"> Yearly </option> 
 </select> x 
<input name="p3" id="p3" value="'.$dplus['duration'].'" type="text" style="width:10px;" />

I'm not sure what a3 is but t3 is ever how long the transaction will happen, and p3 is how many times it will happen.

I looked a little on the web and i found how to make a PayPal button for some kind of product with recurring payments. but I need it to be dynamically inputted.

thank you.

Answer 1

a3 - amount to billed each recurrence
p3 - number of time periods between each recurrence
t3 - time period (D=days, W=weeks, M=months, Y=years)


<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick-subscriptions">
<input type="hidden" name="business" value="[email protected]">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="no_shipping" value="1">
<input type="image" src="http://www.paypal.com/en_US/i/btn/btn_subscribe_LG.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
<input type="hidden" name="a3" value="5.00">
<input type="hidden" name="p3" value="1"> 
<input type="hidden" name="t3" value="M">
<input type="hidden" name="src" value="1">
<input type="hidden" name="sra" value="1">
</form>