How can I send users to PayPal after some processing on the server. {PHP}
<p>I am setting up a paid subscription service and want to keep the signup form to one page. I use PayPal as my payment processor and the standard way of dealing with paypal is to create "Buttons" that POST to PayPal.</p>

<p>However, I need to process the form data before I send the user to paypal. Once I have processed the data, how would I redirect the user to paypal from the server?</p>

<p>Thanks</p>
