php 修改zen-cart下单和付款流程以防止漏单
发布时间：2020-12-13 05:40:33 所属栏目：PHP教程 来源：网络整理
导读：用过zen-cart的人都知道，zen-cart中下单步骤是下面这样的(其中[]中的表示不是必须的)： 1. 购物车(shopping cart) 2. [货运方式(delivery method)] 3. 支付方式(payment method) 4. 订单确认(confirmation) 5. [第三方网站支付] 6. 订单处理(checkout proce
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用过zen-cart的人都知道，zen-cart中下单步骤是下面这样的(其中[]中的表示不是必须的)： 1. 购物车(shopping cart) 2. [货运方式(delivery method)] 3. 支付方式(payment method) 4. 订单确认(confirmation) 5. [第三方网站支付] 6. 订单处理(checkout process)——这一步比较重要，因为会在这里将购物车中的信息写入订单 7. 下单成功(checkout success) 这样的流程在正常情况下是没有任何问题的。但是，从第5步到第6部的过程中，用户可能以为付款成功就直接关闭掉网页了，或者由于网络原因造成不能正常跳转到checkout_process页面，这样造成的后果是很严重的，因为订单不能被正常的创建。 基于上述的分析， 我们希望稍微地改变一下流程，即在支付之前订单已经创建好了，这样就算在支付时不能从第三方支付网站跳转回来，我们也不会存在用户付款成功却在后台没有订单的情况了。经过修改后的蓝图基本是下面这样的： 1. 在checkour_confirmation页面确认订单后，都会直接proccess，并且进入checkour_success页面,可以在这里进入付款页面。如下图所示： 2. 如果当时客户没能付款，也可进入自己的后台对历史订单进行付款。如下图所示： 下面我们就来看看如何一步一步来实现上述的功能。 1. 首先我们需要对现有的支付模块进行一个改造。需要对支付方式的class增加一个字段paynow_action_url，用来表示进行支付的页面url，另外还需要增加一个函数，paynow_button($order_id)，来获取支付表单的参数隐藏域代码。 代码如下: if ( (zen_not_null($module)) && (in_array($module.'.php',$this->modules)) && (isset($GLOBALS[$module]->paynow_action_url)) ) { $this->paynow_action_url = $GLOBALS[$module]->paynow_action_url; } 要增加paynow_button($order_id)函数，请在payment类的最后一个函数之后加上如下的代码： 代码如下: function paynow_button($order_id){ if (is_array($this->modules)) { if (is_object($GLOBALS[$this->selected_module])) { return $GLOBALS[$this->selected_module]->paynow_button($order_id); } } } 2. 以paypal支付方式为例子，说明如何具体实现。为了不破坏paypal原有的代码，我们将paypal.php文件拷贝一个副本出来，并命名为paypalsimple.php，并对里面的代码做适当的修改。代码如下所示，可以看到，这里去掉了对form_action_url的指定，并给定了paynow_action_url，因为我们希望用户点击“确认订单”后直接进入checkout_process，所以如果不指定form_action_url，那么确认订单的表单就会直接提交到checkout_process页面了，而paynow_action_url就是以前的form_action_url的值。paynow_button函数的实现也很简单，这里只是将原先的process_button()函数的内容剪切过来而已，只不过我们没有使用全局的$order变量，而是使用$order = new order($order_id),来重新构造的一个对象，这样做是为在历史订单中显示pay now按钮做准备的。 paypalsimple.php 代码如下: /** * @package paypalsimple payment module * @copyright Copyright 2003-2006 Zen Cart Development Team * @copyright Portions Copyright 2003 osCommerce * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0 * @version $Id: paypalsimple.php 4960 2009-12-29 11:46:46Z gary $ */ // ensure dependencies are loaded include_once((IS_ADMIN_FLAG === true ? DIR_FS_CATALOG_MODULES : DIR_WS_MODULES) . 'payment/paypal/paypal_functions.php'); class paypalsimple { var $code,$title,$description,$enabled; // class constructor function paypalsimple() { global $order; $this->code = 'paypalsimple'; $this->title = MODULE_PAYMENT_PAYPAL_SIMPLE_TEXT_TITLE; if(IS_ADMIN_FLAG === true){ $this->title = MODULE_PAYMENT_PAYPAL_SIMPLE_TEXT_ADMIN_TITLE; } $this->description = MODULE_PAYMENT_PAYPAL_SIMPLE_TEXT_DESCRIPTION; $this->sort_order = MODULE_PAYMENT_PAYPAL_SIMPLE_SORT_ORDER; $this->enabled = ((MODULE_PAYMENT_PAYPAL_SIMPLE_STATUS == 'True') ? true : false); if ((int)MODULE_PAYMENT_PAYPAL_SIMPLE_ORDER_STATUS_ID > 0) { $this->order_status = MODULE_PAYMENT_PAYPAL_SIMPLE_ORDER_STATUS_ID; } $this->paynow_action_url = 'https://' . MODULE_PAYMENT_PAYPAL_SIMPLE_HANDLER; if (is_object($order)) $this->update_status(); } // class methods function update_status() { global $order,$db; if ( ($this->enabled == true) && ((int)MODULE_PAYMENT_PAYPAL_SIMPLE_ZONE > 0) ) { $check_flag = false; $check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . MODULE_PAYMENT_PAYPAL_SIMPLE_ZONE . "' and zone_country_id = '" . $order->billing['country']['id'] . "' order by zone_id"); while (!$check->EOF) { if ($check->fields['zone_id'] < 1) { $check_flag = true; break; } elseif ($check->fields['zone_id'] == $order->billing['zone_id']) { $check_flag = true; break; } $check->MoveNext(); } if ($check_flag == false) { $this->enabled = false; } } } function javascript_validation() { return false; } function selection() { $text = MODULE_PAYMENT_SIMPLE_PAYPAL_TEXT_CATALOG_LOGO.''.MODULE_PAYMENT_PAYPAL_SIMPLE_TEXT_TITLE . ' '; return array('id' => $this->code, 'module' => $text ); } function pre_confirmation_check() { return false; } function confirmation() { return false; } function process_button() { return false; } function before_process() { return false; } function after_process() { return false; } function get_error() { return false; } function check() { global $db; if (!isset($this->_check)) { $check_query = $db->Execute("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_PAYPAL_SIMPLE_STATUS'"); $this->_check = $check_query->RecordCount(); } return $this->_check; } function install() { global $db; $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title,configuration_key,configuration_value,configuration_description,configuration_group_id,sort_order,set_function,date_added) values ('Enable PayPal-Simple Module','MODULE_PAYMENT_PAYPAL_SIMPLE_STATUS','True','Do you want to accept PayPal-Simple payments?','6','0','zen_cfg_select_option(array('True','False'),',now())"); $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title,date_added) values ('Sort order of display.','MODULE_PAYMENT_PAYPAL_SIMPLE_SORT_ORDER','Sort order of display. Lowest is displayed first.','8',use_function,date_added) values ('Payment Zone','MODULE_PAYMENT_PAYPAL_SIMPLE_ZONE','If a zone is selected,only enable this payment method for that zone.','2','zen_get_zone_class_title','zen_cfg_pull_down_zone_classes(',date_added) values ('Set Order Status','MODULE_PAYMENT_PAYPAL_SIMPLE_ORDER_STATUS_ID','Set the status of orders made with this payment module to this value','zen_cfg_pull_down_order_statuses(','zen_get_order_status_name',date_added) values ('Mode for PayPal web services Default: www.paypal.com/cgi-bin/webscror www.paypal.com/us/cgi-bin/webscror for the UK, www.paypal.com/uk/cgi-bin/webscr','MODULE_PAYMENT_PAYPAL_SIMPLE_HANDLER','www.paypal.com/cgi-bin/webscr','Choose the URL for PayPal live processing','73','',now())"); } function remove() { global $db; $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key in ('" . implode("','",$this->keys()) . "')"); } function keys() { return array('MODULE_PAYMENT_PAYPAL_SIMPLE_STATUS','MODULE_PAYMENT_PAYPAL_SIMPLE_HANDLER'); } function paynow_button($order_id){ global $db,$order,$currencies,$currency; require_once(DIR_WS_CLASSES . 'order.php'); $order = new order($order_id); $options = array(); $optionsCore = array(); $optionsPhone = array(); $optionsShip = array(); $optionsLineItems = array(); $optionsAggregate = array(); $optionsTrans = array(); $buttonArray = array(); $this->totalsum = $order->info['total']; // save the session stuff permanently in case paypal loses the session $_SESSION['ppipn_key_to_remove'] = session_id(); $db->Execute("delete from " . TABLE_PAYPAL_SESSION . " where session_id = '" . zen_db_input($_SESSION['ppipn_key_to_remove']) . "'"); $sql = "insert into " . TABLE_PAYPAL_SESSION . " (session_id,saved_session,expiry) values ( '" . zen_db_input($_SESSION['ppipn_key_to_remove']) . "', '" . base64_encode(serialize($_SESSION)) . "', '" . (time() + (1*60*60*24*2)) . "')"; $db->Execute($sql); $my_currency = select_pp_currency(); $this->transaction_currency = $my_currency; $this->transaction_amount = ($this->totalsum * $currencies->get_value($my_currency)); $telephone = preg_replace('/D/',$order->customer['telephone']); if ($telephone != '') { $optionsPhone['H_PhoneNumber'] = $telephone; if (in_array($order->customer['country']['iso_code_2'],array('US','CA'))) { $optionsPhone['night_phone_a'] = substr($telephone,3); $optionsPhone['night_phone_b'] = substr($telephone,3,3); $optionsPhone['night_phone_c'] = substr($telephone,6,4); $optionsPhone['day_phone_a'] = substr($telephone,3); $optionsPhone['day_phone_b'] = substr($telephone,3); $optionsPhone['day_phone_c'] = substr($telephone,4); } else { $optionsPhone['night_phone_b'] = $telephone; $optionsPhone['day_phone_b'] = $telephone; } } $optionsCore = array( 'charset' => CHARSET, 'lc' => $order->customer['country']['iso_code_2'], 'page_style' => MODULE_PAYMENT_PAYPAL_PAGE_STYLE, 'custom' => zen_session_name() . '=' . zen_session_id(), 'business' => MODULE_PAYMENT_PAYPAL_BUSINESS_ID, 'return' => zen_href_link(FILENAME_PAY_SUCCESS,'referer=paypal','SSL'), 'cancel_return' => zen_href_link(FILENAME_PAY_FAILED, 'shopping_url' => zen_href_link(FILENAME_SHOPPING_CART, 'notify_url' => zen_href_link('ipn_main_handler.php','SSL',false,true), 'redirect_cmd' => '_xclick', 'rm' => 2, 'bn' => 'zencart', 'mrb' => 'R-6C7952342H795591R', 'pal' => '9E82WJBKKGPLQ', ); $optionsCust = array( 'first_name' => replace_accents($order->customer['firstname']), 'last_name' => replace_accents($order->customer['lastname']), 'address1' => replace_accents($order->customer['street_address']), 'city' => replace_accents($order->customer['city']), 'state' => zen_get_zone_code($order->customer['country']['id'],$order->customer['zone_id'],$order->customer['zone_id']), 'zip' => $order->customer['postcode'], 'country' => $order->customer['country']['iso_code_2'], 'email' => $order->customer['email_address'], ); if ($order->customer['suburb'] != '') $optionsCust['address2'] = $order->customer['suburb']; if (MODULE_PAYMENT_PAYPAL_ADDRESS_REQUIRED == 2) $optionsCust = array( 'address_name' => replace_accents($order->customer['firstname'] . ' ' . $order->customer['lastname']), 'address_street' => replace_accents($order->customer['street_address']), 'address_city' => replace_accents($order->customer['city']), 'address_state' => zen_get_zone_code($order->customer['country']['id'], 'address_zip' => $order->customer['postcode'], 'address_country' => $order->customer['country']['title'], 'address_country_code' => $order->customer['country']['iso_code_2'], 'payer_email' => $order->customer['email_address'], ); $optionsShip = array( //'address_override' => MODULE_PAYMENT_PAYPAL_ADDRESS_OVERRIDE, 'no_shipping' => MODULE_PAYMENT_PAYPAL_ADDRESS_REQUIRED, ); if (MODULE_PAYMENT_PAYPAL_DETAILED_CART == 'Yes') $optionsLineItems = ipn_getLineItemDetails(); if (sizeof($optionsLineItems) > 0) { $optionsLineItems['cmd'] = '_cart'; // $optionsLineItems['num_cart_items'] = sizeof($order->products); if (isset($optionsLineItems['shipping'])) { $optionsLineItems['shipping_1'] = $optionsLineItems['shipping']; unset($optionsLineItems['shipping']); } if (isset($optionsLineItems['handling'])) { $optionsLineItems['handling_1'] = $optionsLineItems['handling']; unset($optionsLineItems['handling']); } unset($optionsLineItems['subtotal']); // if line-item details couldn't be kept due to calculation mismatches or discounts etc,default to aggregate mode if (!isset($optionsLineItems['item_name_1'])) $optionsLineItems = array(); //if ($optionsLineItems['amount'] != $this->transaction_amount) $optionsLineItems = array(); ipn_debug_email('Line Item Details (if blank,this means there was a data mismatch,and thus bypassed): ' . "n" . print_r($optionsLineItems,true)); } $products_name_display = ""; /* for ($i=0,$n=sizeof($order->products); $i<$n; $i++) { if(i > 0) { $products_name_display.= ','; } $products_name_display.= $order->products[$i]['name']. '('. $order->products[$i]['qty'] .','.$order->products[$i]['dhisys_web_order_number'].')'; }*/ $optionsAggregate = array( 'cmd' => '_ext-enter', 'item_name' => $products_name_display, 'item_number' => $order_id, 'num_cart_items' => sizeof($order->products), 'amount' => number_format($this->transaction_amount,$currencies->get_decimal_places($my_currency)), 'shipping' => '0.00', ); if (MODULE_PAYMENT_PAYPAL_TAX_OVERRIDE == 'true') $optionsAggregate['tax'] = '0.00'; if (MODULE_PAYMENT_PAYPAL_TAX_OVERRIDE == 'true') $optionsAggregate['tax_cart'] = '0.00'; $optionsTrans = array( 'upload' => (int)(sizeof($order->products) > 0), 'currency_code' => $my_currency, // 'paypal_order_id' => $paypal_order_id, //'no_note' => '1', //'invoice' => '', ); // if line-item info is invalid,use aggregate: if (sizeof($optionsLineItems) > 0) $optionsAggregate = $optionsLineItems; // prepare submission $options = array_merge($optionsCore,$optionsCust,$optionsPhone,$optionsShip,$optionsTrans,$optionsAggregate); ipn_debug_email('Keys for submission: ' . print_r($options,true)); if(sizeof($order->products) > 0){ $options['cmd'] = '_cart'; for ($i=0,$n=sizeof($order->products); $i<$n; $i++) { $options['item_name_'. (string)($i+1)] = $order->products[$i]['name']; $options['item_number_'. (string)($i+1)] = $order->products[$i]['dhisys_web_order_number']; $options['amount_'. (string)($i+1)] = number_format((float)$order->products[$i]['final_price'],2); $options['quantity_'. (string)($i+1)] = $order->products[$i]['qty']; } } // build the button fields foreach ($options as $name => $value) { // remove quotation marks $value = str_replace('"',$value); // check for invalid chars if (preg_match('/[^a-zA-Z_0-9]/',$name)) { ipn_debug_email('datacheck - ABORTING - preg_match found invalid submission key: ' . $name . ' (' . $value . ')'); break; } // do we need special handling for & and = symbols? //if (strpos($value,'&') !== false || strpos($value,'=') !== false) $value = urlencode($value); $buttonArray[] = zen_draw_hidden_field($name,$value); } $_SESSION['paypal_transaction_info'] = array($this->transaction_amount,$this->transaction_currency); $process_button_string = implode("n",$buttonArray) . "n"; return $process_button_string; } } ?> 3. 在checkout_success页面中显示pay now按钮。打开文件"includes/modules/pages/checkout_success/header.php"，在文件的末尾添加下面的代码（如果你已经掌握zen-cart中的通知者/观察者模式，并且又不想破坏zen-cart核心代码的话，也可以创建一个观察类来监听NOTIFY_HEADER_END_CHECKOUT_SUCCESS来实现）。 代码如下: require_once(DIR_WS_CLASSES . 'order.php'); require_once(DIR_WS_CLASSES . 'payment.php'); $payment_modules = new payment($orders->fields['payment_module_code']); 打开文件"includes/modules/templates/template_default/templates/tpl_checkout_success_default.php"，并在适当的位置加上如下的代码，这里对订单的状态进行了一个判断，当只有订单的状态在未付款状态，才显示该按钮， 代码如下: //&& $orders->fields['orders_status'] == '1' if(isset($payment_modules->paynow_action_url) && $payment_modules->paynow_action_url != ''&& $orders->fields['orders_status'] == '1'){ echo(' 4. 在历史订单中显示pay now按钮。需要显示pay now按钮的页面有三个：account,account_history,account_history_info，这里的实现和checkout_success页面的实现大同小异，只是传给$payment_modules的函数paynow_button的参数不一样而已，这里就不再赘述。 总结： 经过上面的修改，我们的流程如下： 1. 购物车(shopping cart) 2. [货运方式(delivery method)] 3. 支付方式(payment method) 4. 订单确认(confirmation) 5. 订单处理(checkout process) 6. 下单成功(checkout success) 7. [第三方网站支付] 因为从订单确认到订单处理，都是在我们自己的网站完成的，并且进入支付网站之前，订单已经存在了，这样就不会出现掉单的情况了。 （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
