Setup POST variables and the Redirect Page
<p>I currently have a standard paypal form, which posts to paypal and charges an amount.  However these details can easily be modified by the user.  So, I am wondering if I can do the following:</p>

<p>Instead of my 'Finish &amp; Pay' button going directly to paypal, the button's form is pointed at my website.</p>

<p>My website PHP code then set's up the POST variables, (address, name, amount, business, return_url etc) and then redirects the page to paypal site.</p>

<p>How would this be possible with PHP? So far the only code I would know to do would be using the <code>header()</code> function to redirect the page, but I don't know how to set up the POST variables.</p>
