A simple class to create a paypal secure button

gistfile1.php

<?php

namespace SkinBootstrap\Utility;

class Paypal {

    public static function createButton($id, $name, $price, $debug = false) {

        $username = PAYPAL_API_USERNAME;
        $password = PAYPAL_API_PASSWORD;
        $signature = PAYPAL_API_SIGNATURE;

        if($debug) {
            $username = PAYPAL_SANDBOX_API_USERNAME;
            $password = PAYPAL_SANDBOX_API_PASSWORD;
            $signature = PAYPAL_SANDBOX_API_SIGNATURE;
        }

        $sendPayData = array(
            "METHOD" => "BMCreateButton",
            "VERSION" => "65.2",
            "USER" => $username,
            "PWD" => $password,
            "SIGNATURE" => $signature,
            "BUTTONCODE" => "ENCRYPTED",
            "BUTTONTYPE" => "BUYNOW",
            "BUTTONSUBTYPE" => "PRODUCTS",
            "BUTTONCOUNTRY" => "GB",
            "BUTTONIMAGE" => "reg",
            "BUYNOWTEXT" => "BUYNOW",
            "L_BUTTONVAR1" => "item_number=$id",
            "L_BUTTONVAR2" => "item_name=$name",
            "L_BUTTONVAR3" => "amount=$price",
            "L_BUTTONVAR4" => "currency_code=USD",
            "L_BUTTONVAR5" => "no_shipping=1",
            "L_BUTTONVAR6" => "no_note=1",
            "L_BUTTONVAR7" => "notify_url=http://www.abc.co.uk/paypal/ipn.php",
            "L_BUTTONVAR8" => "cancel_return=http://www.abc.co.uk/paypal/thanks",
            "L_BUTTONVAR9" => "return=http://www.abc.co.uk/paypal/return.php"
        );

        $curl = curl_init();
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);

        $url = 'https://api-3t.paypal.com/nvp?';
        if($debug) {
            $url = 'https://api-3t.sandbox.paypal.com/nvp?';
        }

        curl_setopt($curl, CURLOPT_URL, $url.http_build_query($sendPayData));
        $nvpPayReturn = curl_exec($curl);
        if($debug) {
            var_dump($nvpPayReturn);
        }
        curl_close($curl);

        parse_str($nvpPayReturn, $stringBits);
        if($stringBits['ACK'] == 'Success') {
            return $stringBits['WEBSITECODE'];
        }

        return null;
    }

    public static function renderButton($debugMode, $code) {

        if($debugMode) {
            //$code = str_replace('www.paypal.com', 'sandbox.paypal.com', $code);
        }

        return $code;

    }

}