PayPal Express Checkout submission issue
My Paypal Express checkout (on checkout.php page) submits back to my Home Page / goes nowhere. Here is the submission form code:-
<form name="PayPal_ExpressCheckout_form" action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="post">
<h3 class="eC_CheckoutFormHeader">Fast, Secure Checkout with PayPal </h3>
<input type="image" alt="PayPal Express Checkout" name="PayPal_ExpressCheckout_button" id="PayPal_ExpressCheckout_button" src="WA_eCart/PP_ECO_Scripts/btn_xpressCheckoutsm.gif" width="145" height="42"/>
<p>Save time. Checkout securely. Pay without sharing your financial information.</p>
I'm using server side includes and as I've had to edit the other checkout pages in this respect I'm guessing this is probably the issue.
Please advise for code edit/fix.