Php 带CodeIgniter的PayPal IPN

我正在尝试在一个内置CodeIgniter的网站上实现会员订阅服务。我希望使用PayPal来管理付款，我在实现这一点上遇到了困难

我努力实现的目标是：

用户使用 个人资料

用户选择一个 订阅选项（8个选项中的1个-每个不同的价格）并提交表格

用户被发送到PayPal进行支付

用户在成功付款后返回站点，个人详细信息存储在创建用户帐户（会员资格）的数据库中

另外还有表单验证，我在CodeIgniter中使用表单验证助手，但这需要在PayPal支付开始之前完成

我曾尝试从Ran Aroussi实现PayPal_库，但我觉得它没有足够清晰的文档或指导。任何实施的示例或建议都将不胜感激

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Lucas

下面是Jamie Rumme提供的paypal库，我对其进行了一些小调整：

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下面是我在Ran的库中使用的未经修改的代码。 希望能有帮助

<?php
/**
 * PayPal_Lib Controller Class (Paypal IPN Class)
 *
 * Paypal controller that provides functionality to the creation for PayPal forms, 
 * submissions, success and cancel requests, as well as IPN responses.
 *
 * The class requires the use of the PayPal_Lib library and config files.
 *
 * @package     CodeIgniter
 * @subpackage  Libraries
 * @category    Commerce
 * @author      Ran Aroussi <ran@aroussi.com>
 * @copyright   Copyright (c) 2006, http://aroussi.com/ci/
 *
 */

class Paypal extends Controller 
{

    function Paypal()
    {
        parent::Controller();
        $this->load->library('Paypal_Lib');
    }

    function index()
    {
        $this->form();
    }

    function form()
    {

        $this->paypal_lib->add_field('business', 'herrka_1245670546_biz@pandorascode.com');
        $this->paypal_lib->add_field('return',          site_url('paypal/success') );
        $this->paypal_lib->add_field('cancel_return',   site_url('paypal/cancel') );
        $this->paypal_lib->add_field('notify_url',      site_url('paypal/ipn') ); // <-- IPN url
        $this->paypal_lib->add_field('custom', '470874552'); // <-- Verify return

        $this->paypal_lib->add_field('item_name', 'Paypal Test Transaction');
        $this->paypal_lib->add_field('item_number', '5');
        $this->paypal_lib->add_field('amount', '9.95');

        // if you want an image button use this:
        $this->paypal_lib->image('button_03.gif');

        // otherwise, don't write anything or (if you want to 
        // change the default button text), write this:
        // $this->paypal_lib->button('Click to Pay!');

        $data['paypal_form'] = $this->paypal_lib->paypal_form();

        $this->load->view('paypal/form', $data);

    }

    function cancel()
    {
        $this->load->view('paypal/cancel');
    }

    function success()
    {
        //$data['pp_info'] = $this->input->post();
        $data['pp_info'] = $_POST; //FIX?
        $this->load->view('paypal/success', $data);
    }

    function ipn()
    {

        $ipn_valid = $this->paypal_lib->validate_ipn();
        if ( $ipn_valid == TRUE )
        {


            /**
                Log IPN
                TODO: bunu daha guzel gozukecek sekilde yapayim ilerde.
            **/
            date_default_timezone_set('Europe/Istanbul');
            $this->load->helper('date');

            $raw = '';
            foreach ($this->paypal_lib->ipn_data as $key=>$value)
            {
                $raw .= "\n$key: $value";
            }

            $this->load->model('model_paypal');

            $data_ipn['user_id']            = $this->paypal_lib->ipn_data['custom']; /* get USER_ID from custom field. */
            $data_ipn['txn_id']             = $this->paypal_lib->ipn_data['txn_id'];
            $data_ipn['payment_status']     = $this->paypal_lib->ipn_data['payment_status'];
            $data_ipn['mc_gross']           = $this->paypal_lib->ipn_data['mc_gross'];
            $data_ipn['mc_fee']             = $this->paypal_lib->ipn_data['mc_fee'];
            $data_ipn['mc_currency']        = $this->paypal_lib->ipn_data['mc_currency'];
            $data_ipn['item_number']        = $this->paypal_lib->ipn_data['item_number'];
            $data_ipn['datetime']           = mdate( "%Y-%m-%d %H:%i:%s" );
            $data_ipn['status']             = IPN_ENTRY_AWAITING;
            $data_ipn['raw']                = $raw;

            $this->model_paypal->ipn_entry_add ( $data_ipn );



            $ipn_payment_status = $this->paypal_lib->ipn_data['payment_status'];
            if ( strtolower($ipn_payment_status) == 'pending' )
            {


                log_message('debug', 'payment status TAMAM');
                $this->load->model('model_user_premium');


                $ipn_item_number    = $this->paypal_lib->ipn_data['item_number'];
                $item_info          = $this->model_user_premium->Premium_item_info ( $ipn_item_number );

                $ipn_mc_gross       = $this->paypal_lib->ipn_data['mc_gross'];

                log_message('debug', 'Item fee: '. $item_info['item_fee'] );                

                if ( $item_info['item_fee'] == $ipn_mc_gross ) 
                {

                    log_message('debug', 'fee ile gross TAMAM');



                    $data_account['user_id']        = $data_ipn['user_id'];
                    $data_account['type']           = $item_info['item_type'];
                    $data_account['date_expire']    = date("Y-m-d", mktime(0, 0, 0, date("m") + $item_info['date_extender'], date("d"), date("y") ) ); 


                    log_message('debug', 'UserID: '.    $data_account['user_id']        );
                    log_message('debug', 'Type:'.       $data_account['type']           );
                    log_message('debug', 'Expire:'.     $data_account['date_expire']    );


                    $this->model_user_premium->Premium_membership_change( $data_ipn['user_id'], $data_account );

                }
                else
                {

                    //TODO: report eksik transaction.

                }

            }



        }
        elseif ( $ipn_valid == FALSE )
        {

            $this->load->library('email');
            $this->email->to( 'demo@demo.com' );
            $this->email->subject('IPN - FAILED');
            $this->email->from( 'notify@bulusturx.com', 'PAYPAL' );
            $this->email->message('or 4 life'); 

            $this->email->send();

        }


    }

    function ipn_list()
    {
        //TODO: admin check
        $this->load->helper('form');
        $this->load->model('model_theme');

        switch ( $_SERVER['REQUEST_METHOD'] ) 
        {

            case 'GET':

                /* Theme System with Reference Variable ( first param ) */
                $this->model_theme->Theme_returnThemeInfo( $data, 'paypal' );
                $this->load->view( $data['theme_folder_vault'] . 'master-ipn_list', $data );


            break;

            case 'POST':

                $this->load->model('model_paypal');
                $user_id    = $this->input->post('user_id');
                $txn_id     = $this->input->post('txn_id');

                $list_ipn = $this->model_paypal->ipn_entry_list ( $user_id, $txn_id );

                echo '<pre>';
                print_r( $list_ipn );
                echo '</pre>';


            break;


            default:
            break;
        }


    }


    function ipn_test()
    {

        $this->load->model('model_user_premium');

        $data_account['user_id']        = 123;
        $data_account['type']           = 4;
        $data_account['date_expire']    = date("Y-m-d", mktime(0, 0, 0, date("m") + 12, date("d"), date("y") ) );

        echo '<pre>';
        print_r( $data_account );
        echo '</pre>';


        $this->model_user_premium->Premium_membership_change( 123, $data_account );

    }

}

?>

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我发现Ran的库也有点难以使用，因此我编写了一个替换库，它还可以对事务执行更多检查，并将IPN调用和订单详细信息记录在数据库中。这是GitHub上的库，我希望您会发现它很有用：

Paypal是一个相对难以使用的API。我个人会使用像DPS这样的服务。如果您将“if（$this->CI->input->post（）”）更改为“if（isset（$\u post））”，则该库工作正常。你犯了什么错误？做得好Alex。然而，你们有一个不需要条令的版本吗？嗨，布莱恩，是的，现在有一个版本不需要条令