I'm having paypal pains, any experts in the house? -


i've been searching high , low decent (up-to-date) paypal class use simple checkout requirements, in absence of such class i've tried roll own:

$paypal = array(     'cmd'=>'_cart',     'business'=>'kung@foo.com',     'no_shipping'=> 1,     'return'=>'http://www.foo.com',     'cancel_return'=>'http://www.foo.com',     'currency_code'=> 'gbp',     'charset'=>'utf-8' );       $i=0;     $cart = array();     foreach ((array)$_session['place_ad']['cart'] $value)     {         $i++;         $cart = array("item_name_$i" => $value['title'], "amount_$i" => $value['price']);         $paypal = array_merge($paypal, $cart);     }  header('location: https://www.paypal.com/cgi-bin/webscr?'.http_build_query($paypal));

as far can see, passed paypal correctly, paypal spits out i'm taking gibberish following error:

we have detected problem shopping cart. if problem persists, please contact merchant.

can tell me i'm doing wrong i'm complete novice when comes paypal integration.


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