Kỳ 2: Design Pattern – Ứng dụng Adaptor Pattern xây dựng module thanh toán cho gian hàng
“Người ta không phát minh lại cái bánh xe”, bởi vì nó đã được người khác phát minh ra trước đó. Nhưng còn tệ hơn nữa khi chính bạn đã phát minh ra cái bánh xe và sau đó bạn tìm cách phát minh lại nó.
Trong lập trình, rất nhiều lúc bạn phải phát triển một tính năng nào đó cho một sản phẩm phần mềm, và thật may mắn, bạn phát hiện ra một cái tương tự như thế đã được bạn viết ra trước đây. Nhưng vấn đề là những đoạn mã trước đó bạn viết ra chỉ để phục vụ cho công việc của thời điểm đó, và bạn sẽ phải đổ rất nhiều mồ hôi để làm một loạt các thao tác: copy/cut/paste/delete/rename… để sử dụng chúng trong hoàn cảnh mới. Những lúc như vậy, bạn chỉ ước rằng trước đây mình chịu khó dùng cái đầu nhiều hơn một chút, module hóa chức năng đó tốt hơn một tí, code cẩn thận hơn một tẹo… để bây giờ đỡ hao tâm khổ tứ hơn nhiều lần. Design Pattern (tạm dịch là Mẫu thiết kế) trong lập trình chính là các giải pháp về thiết kế, tổ chức code cho từng tình huống, vấn đề khác nhau. Mỗi Design Pattern thường được đưa ra với một cặp “Problem” – “Solution” (Vấn đề – Giải pháp), và được gọi với một cái tên dùng gợi nhớ ý nghĩa của nó.
Trong bài này, chúng ta sẽ lướt qua một số mẫu design pattern phổ biến, sử dụng các kịch bản tình huống xây dựng một gian hàng trực tuyến để thấy rõ các vấn đề và giải pháp trong từng hoàn cảnh.
Ứng dụng Adaptor Pattern xây dựng module Thanh toán cho gian hàng
Chức năng quan trọng nhất mà mọi gian hàng cần phải xây dựng đó là module thanh toán. Hiện nay có rất nhiều giải pháp cho việc thanh toán trực tuyến, trong đó một vài cái tên quen tai như: Paypal, Liberty Reverse, Visa Card, Master Card, thậm chí là ATM. Thật tuyệt vời nếu chúng ta có thể xây dựng một chức năng thanh toán có thể cho phép người dùng lựa chọn bất cứ loại giao dịch nào thuận tiện nhất đối với họ. Chức năng này sẽ phải cài đặt từng module riêng rẽ cho mỗi loại phương thức giao dịch, nhưng chúng ta muốn module quản lý thanh toán sẽ nhìn từng module kia dưới một hình thức duy nhất, đó chính là lý thuyết Đa hình mà chúng ta đã tìm hiểu ở phần trước. Thật rối rắm! Nhưng bạn sẽ thấy nó rõ ràng hơn sau khi theo dõi các ví dụ được lấy ra từ một thư viện PHP Payment Library đã được xây dựng sẵn:
Trước hết chúng ta sẽ xây dựng một abstraction class, định nghĩa API cho các phương thức giao dịch được chấp nhận.
abstract class PaymentGateway
{
// Holds the last error encountered
public $lastError;
// Field array to submit to gateway
public $fields = array();
// Payment gateway URL
public $gatewayUrl;
// Initialization constructor
public function __construct()
{
// Some default values of the class
$this->lastError = '';
}
// Adds a key=>value pair to the fields array
public function addField($field, $value)
{
$this->fields["$field"] = $value;
}
// Submit Payment Request
public function submitPayment()
{
$this->prepareSubmit();
// POST form with some hidden elements to gateway
}
// Perform any pre-posting actions
protected function prepareSubmit()
{
// Fill if needed
}
/* Some IPN properties and functions definition */
}
Tất cả các phương thức giao dịch trực tuyến (Paypal, Authorize.net, 2Checkout…) đều thực hiện những tiến trình thanh toán chung như sau:
1 – Thiết đặt một số thông tin giao dịch trong các hidden field của form giao dịch.
2 – Người dùng điền thêm một số thông tin tùy biến (phụ thuộc vào từng loại giao dịch) trên form, và bấm submit.
3 – Tiến trình sẽ chuyển sang cổng thanh toán (qua một gateway URL), từ lúc đó cổng thanh toán sẽ thực hiện toàn bộ quá trình còn lại.
4 – Trả về (redirect) website bán hàng một mã xác định trạng thái giao dịch (thành công hay lỗi).
Với tiến trình chung như trên, lớp trừu tượng của chúng ta sẽ có:
- Những thuộc tính cơ bản như:
+ lastError: Lưu lại lỗi cuối cùng.
+ gatewayUrl: url của cổng thanh toán.
+ fields: mảng chứa các trường thiết đặt trong form…
- Những phương thức cơ bản:
+ prepareSubmit(): Các thao tác trước khi bắt đầu giao dịch.
+ addField(): Thêm các trường thiết đặt.
+ submitPayment(): Thực hiện giao dịch.
Và công việc tiếp theo khá rõ ràng, chúng ta sẽ lần lượt xem xét từng giao thức giao dịch và xây dựng module thanh toán cho từng loại dựa trên API của lớp trừu tượng PaymentGateway.
Bắt đầu từ Paypal:
class Paypal extends PaymentGateway
{
// Initialize the Paypal gateway
public function __construct()
{
parent::__construct();
// Some default values of the class
$this->gatewayUrl = 'https://www.paypal.com/cgi-bin/webscr';
// Populate $fields array with a few default
$this->addField('rm', '2'); // Return method = POST
$this->addField('cmd', '_xclick');
}
// Validate the IPN notification
public function validateIpn()
{
// Paypal IPN processing
}
}
Với định nghĩa trên, chúng ta đã xây dựng hoàn thành một module thanh toán cho Paypal, chỉ bằng cách thêm một vài trường thiết đặt. Điểm mở rộng lớn nhất từ lớp trừu tượng đó là thực thi phương thức validateIpn(), cài đặt dịch vụ IPN của Paypal vào module thanh toán. Về IPN các bạn có thể tham khảo tại đây – Instant Payment Notification, tuy nhiên nói nôm na thì IPN là dịch vụ của các dịch vụ thanh toán thông báo trạng thái giao dịch realtime cho ứng dụng (và người dùng).
Tiếp đến, giả sử bạn cần cài đặt module thanh toán cho 2Checkout:
class TwoCo extends PaymentGateway
{
// Secret word to be used for IPN verification
public $secret;
// Initialize the 2CheckOut gateway
public function __construct()
{
parent::__construct();
// Some default values of the class
$this->gatewayUrl = 'https://www.2checkout.com/checkout/purchase';
$this->ipnLogFile = '2co.ipn_results.log';
}
// Set the secret word
public function setSecret($word)
{
if (!empty($word))
{
$this>secret = $word;
}
}
// Validate the IPN notification
public function validateIpn()
{
// 2Checkout IPN proccessing
}
}
Hoàn toàn tương tự như Paypal, nhưng ở 2Checkout thấy ngay một điểm khác đó là xuất hiện trường $secret, một mã bí mật được sử dụng trong quá trình validate IPN của 2Checkout, và hàm setSecret().
Như vậy rất nhanh chóng, chúng ta xây dựng xong 2 module thanh toán cho 2 dịch vụ thanh toán trực tuyến: Paypal và 2Checkout. Gian hàng của bạn đã có thể chấp nhận được và sẵn sàng cho một cuộc mua bán đậm mùi tiền:
// Include the paypal library
include_once ('Paypal.php');
// Create an instance of the paypal library
$myPaypal = new Paypal();
// Specify your paypal email
$myPaypal->addField('business', 'YOUR_PAYPAL_EMAIL');
// Specify the currency
$myPaypal->addField('currency_code', 'USD');
// Specify the url where paypal will send the user on success/failure
$myPaypal->addField('return', 'http://YOUR_HOST/payment/paypal_success.php');
$myPaypal->addField('cancel_return', 'http://YOUR_HOST/payment/paypal_failure.php');
// Specify the url where paypal will send the IPN
$myPaypal->addField('notify_url', 'http://YOUR_HOST/payment/paypal_ipn.php');
// Specify the product information
$myPaypal->addField('item_name', 'T-Shirt');
$myPaypal->addField('amount', '9.99');
$myPaypal->addField('item_number', '001');
// Specify any custom value
$myPaypal->addField('custom', 'muri-khao');
Hoặc với 2Checkout:
// Include the paypal library
include_once ('TwoCo.php');
// Create an instance of the authorize.net library
$my2CO = new TwoCo();
// Specify your 2CheckOut vendor id
$my2CO->addField('sid', 'YOUR_VENDOR_ID');
// Specify the order information
$my2CO->addField('cart_order_id', rand(1, 100));
$my2CO->addField('total', '9.99');
// Specify the url where authorize.net will send the IPN
$my2CO->addField('x_Receipt_Link_URL', 'http://YOUR_HOST/payment/twoco_ipn.php');
$my2CO->addField('tco_currency', 'USD');
$my2CO->addField('custom', 'muri-khao');
Với một module thanh toán cross-gateway như thế, chúng ta sẽ có một hàm kiểu như:
function payment($paymentGateway)
{
$paymentGateway->submitPayment();
}
Một ví dụ tương tự như thế về những chiếc TV và Đa hình đã có ở phần trước. Chúng ta sẽ hiểu với bất cứ một phương thức giao dịch nào sử dụng API của PaymentGateway đều cài đặt hàm submitPayment() và đều có thể sử dụng để thanh toán qua hàm payment() trên.
Lúc này có lẽ giải pháp sử dụng Adaptor Pattern đã rõ ràng hơn. Khi có nhiều classes thực thi cùng 1 dịch vụ và sử dụng chung một API, thì chúng ta có thể sử dụng Adaptor Pattern để tạo ra một giao diện chung và tận dụng sức mạnh của Đa hình để khai thác tối đa sự tiện ích của lập trình hướng đối tượng. Có thể thấy việc phát triển các module cho từng phương thức thanh toán đã tường minh và sáng sủa hơn. Với một thiết kế tốt như thế, chương trình của chúng ta sẽ có thể dễ dàng bảo trì, cải tiến, mở rộng trong tương lai.
Adaptor Pattern cũng có thể hữu dụng trong một số trường hợp khác:
- Problem A: Khi sử dụng các library mã đóng với API không thể thay đổi, trong khi chúng ta cần một giao diện sử dụng khác, để tương thích với một framework chẳng hạn. Thì chúng ta sẽ định nghĩa một third-party class sử dụng Adaptor Pattern để tạo ra một class mới với giao diện tương thích. Trong trường hợp chúng ta có thể hình dung class đó như một “bộ chuyển đổi” (adaptor), tương tự như các bộ chuyển đổi thường thấy trong thường ngày: chuyển từ phích cắm nguồn 3 chân sang 2 chân, từ cổng mini-USB sang USB 2.0… với mục đích sử dụng cho các thiết bị khác nhau.
- Problem B: Phần core của PHP được xây dựng từ rất lâu với các thư viện hàm tích hợp vẫn theo hướng thủ tục (chứ không phải hướng đối tượng). Và có rất nhiều thao tác sử dụng cần thiết phải gọi 1 loạt các hàm liên tiếp nhau và được liên kết thông qua một biến, handler. Ví dụ như khi cần làm việc với cơ sở dữ liệu MySQL, chúng ta luôn phải thực hiện việc gọi các hàm tuần tự:
$user="username"; $password="password"; $database="database"; mysql_connect(localhost,$user,$password); @mysql_select_db($database) or die( "Unable to select database"); $query="SELECT * FROM table"; mysql_query($query); mysql_close();
Chúng ta có thể sử dụng Adaptor Pattern để tạo ra một adaptor, làm nhiệm vụ thực hiện tất cả những tiến trình đó và lưu giữ kết nối với database trên một handler – là một thuộc tính của adaptor class. Ví dụ cho phần này có thể xem thêm ở chương 2, cuốn Advance PHP Programming.
Tham khảo:
Chapter 2, Part 1, Advance PHP Programming.
Toàn bộ phần code minh họa được bóc tách ra từ thư viện PHP Payment Library. Có thể download tại đây - [PHP Payment Library]
Tags: adaptor pattern, design pattern, payment, shopping
![[Sams] Advance PHP Programming](http://howtophp.net/wp-content/uploads/2010/08/advance-php-cover.png)
![[Apress] Beginning PHP5 and MySQL5 From Novice to Professional 2nd Edition](http://howtophp.net/wp-content/uploads/2010/08/beginning2prof.png)
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Links…
[...]Sites of interest we have a link to[...]……
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Gems form the internet…
[...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]……
brooklyn…
visit the websites below, because they offer helpful services…
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
link building…
below are a few hyper-links to web-sites which we connect to because we feel they are worthwhile visiting…
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Links…
[...]Sites of interest we have a link to[...]……
able…
It would be nice if you had a script you could run as root to check all tables for hosting providers like us? Nice article!…
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
abode…
Where is the feed button, so I can subscribe to your updates?…
Visitor recommendations…
[...]one of our visitors recently recommended the following website[...]……
Links…
[...]Sites of interest we have a link to[...]……
Related……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Read was interesting, stay in touch……
[...]please visit the sites we follow, including this one, as it represents our picks from the web[...]……
Online Article……
[...]The information mentioned in the article are some of the best available [...]……
Awesome website…
[...]the time to read or visit the content or sites we have linked to below the[...]……
Tumblr article…
I saw someone talking about this on Tumblr and it linked to…
Links…
[...]Sites of interest we have a link to[...]……
Yahoo results…
While browsing Yahoo I found this page in the results and I didn’t think it fit…
Wikia…
Wika linked to this place…
my offers…
I am regularly saying that its difficult to find good help, but here is…
All Natural Swimming Ponds…
[...]following you will discover the website link to a few webpages which we think that you need to stop by[...]…
Its hard to find good help…
I am forever proclaiming that its difficult to find quality help, but here is…
psychic light…
Wika linked to this place…
Anti Wrinkle…
I am constantnly proclaiming that its difficult to get quality help, but here is…
Looking around…
I like to surf in various places on the internet, often I will go to Digg and read and check stuff out…
Dinorah…
I’ve to admit that this can be a really nice looking for blog which is comparable to 1 that I wanted producing for me but the chap I asked needed way an excessive quantity of funds. Did you have this theme custom produced or is it a premium theme?…
Wikia…
Wika linked to this place…
News info…
I was reading the news and I saw this really cool topic…
Digg…
While checking out DIGG yesterday I noticed this…
business credit cards compare…
I was reading the news and I saw this really cool topic…
While I was {browsing|surfing} {today|yesterday} I {saw|noticed} a {great|excellent} {post|article} {about|concerning}…
I like to surf in various places on the web, often I will go to Stumble Upon and follow thru…
Looking around…
I like to browse around the web, regularly I will go to Digg and read and check stuff out…
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
Superb website…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
Tumblr article…
I saw someone talking about this on Tumblr and it linked to…
Bing results…
While browsing Bing I discovered this page in the search results and I didn’t think it match…
News…
I was reading the Yahoo news and I saw this really interesting topic…
Tumblr article…
I saw a writer talking about this on Tumblr and it linked to…
Just Browsing…
While I was browsing yesterday I saw a excellent article about…
Its hard to find good help…
I am constantnly proclaiming that its hard to find good help, but here is…
Digg…
While checking out DIGG today I noticed this…
Dreary Day…
It was a dreary day here yesterday, so I just took to messing around online and found…
Useful and precise…
Its hard to find really informative and accurate info but here I noted…
Great website…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
Tumblr…
Tumblr linked to this website…
Informative and precise…
Its difficult to find informative and accurate information but here I noted…
News…
I was reading the Yahoo news and I saw this really cool info…
Hard Day…
It was a hard day here yesterday, so I just took to messing around online and found…
News info…
I was reading the news and I saw this really interesting information…
Links…
[...]Sites of interest we have a link to[...]……
Looking around…
I love to look in various places on the web, regularly I will just go to Stumble Upon and read and check stuff out…
Online Article……
[...]The information mentioned in the article are some of the best available [...]……
Informative and precise…
Its difficult to find informative and precise info but here I noted…
Looking around…
I love to surf around the internet, often I will go to Digg and read and check stuff out…
Just Browsing…
While I was browsing today I noticed a great article concerning…
Recent Blogroll Additions……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Looking around…
I like to browse in various places on the web, regularly I will just go to Stumble Upon and follow thru…
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Thanks!…
Thanks for all your insight. This site has been really helpful to me….
Digg…
so difficult to find any decent information I can count on about gold… thanks for your article…
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Superb website…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
Sites we Like……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Just Reading…
The other day, I was browsing online I noticed a great article about…
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
Cool sites…
[...]we came across a cool site that you might enjoy. Take a look if you want[...]……
Awesome website…
[...]the time to read or visit the content or sites we have linked to below the[...]……
Great website…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
Check this out…
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
Dreary Day…
It was a dreary day here today, so I just took to messing around on the internet and found…
Tumblr article…
I saw someone talking about this on Tumblr and it linked to…
Cool sites…
[...]we came across a cool site that you might enjoy. Take a look if you want[...]……
Recent Blogroll Additions……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Visitor recommendations…
[...]one of our visitors recently recommended the following website[...]……
Recommeneded websites…
[...]Here are some of the sites we recommend for our visitors[...]……
Links…
[...]Sites of interest we have a link to[...]……
It is quite hard to find good help…
I am really constantnly proclaiming that its difficult to find good honest help, but here is…
Bing results…
While searching Bing I discovered this page in the search results and I didn’t think it match…
Tumblr…
Tumblr linked to this site…
Bing results…
While searching Bing I found this page in the search results and I didn’t think it match…
Sites we Like……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Tumblr…
Tumblr linked to this site…
It is quite hard to find good help…
I am really forever saying that its difficult to procure quality honest help, but here is…
Yahoo News…
When checking out Yahoo News today I noticed this…
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
Links…
[...]Sites of interest we have a link to[...]……
Digg…
While checking out DIGG yesterday I noticed this…
Digg…
While checking out DIGG today I found this…
Wikia…
Wika linked to this site…
Brian Tracy…
We will always tend to fulfill our own expectation of ourselves….
lattenrost 90×200…
I’ve noticed that fixing credit activity needs to be conducted with tactics. If not, you will probably find yourself damaging your ranking. In order to realize your aspirations in fixing your credit ranking you have to make sure that from this second …
Bing results…
While searching Bing I found this page in the search results and I didn’t think it match…
Yesturdays Arbeit für Morgen – ein Blick auf einige Beispiele…
Gerade beachtet dieses Beispiel, über gezeigt Arnold McCormick an Phasenjournal und gefunden ihm vor um zu sein ein wenig informativ und auch der Punkt…
Informative and precise…
Its difficult to find informative and accurate information but here I found…
A great example…
And here is precisely what we mean…
News…
I was reading the Yahoo news and I saw this really interesting info…
Looking around…
I love to surf around the internet, regularly I will go to Digg and read and check stuff out…
Yahoo News…
When checking out Yahoo News today I noticed this…
Just Looking…
When I was browsing yesterday I saw a great article concerning…
Just Looking…
When I was surfing today I noticed a great article concerning…
Tom Hopkins…
“Why don’t you want to do what you know you should do? The reason you don’t is that you’re in conflict with yourself.”…
Useful and precise…
Its hard to find really informative and accurate info but here I found…
Just Looking…
When I was surfing yesterday I saw a great post about…
Iron Man 3…
If you need to check out the latest trailer or info about the iron man 3 go to at our site….
Bing results…
While searching Bing I discovered this page in the search results and I didn’t think it match…
Weebly article…
I saw someone writing about this on Weebly and it linked to…
Check this out…
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
Tumblr article…
I saw a writer writing about this on Tumblr and it linked to…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Yahoo results…
While browsing Yahoo I discovered this page in the results and I didn’t think it fit…
Tumblr article…
I saw a writer talking about this on Tumblr and it linked to…
It is quite hard to find good help…
I am really constantnly saying that its difficult to get good honest help, but here is…
News…
I was reading the Yahoo news and I saw this really cool topic…
Just Looking…
When I was surfing yesterday I saw a excellent article about…
Useful and precise…
Its difficult to find really informative and accurate info but here I found…
Related……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Looking around…
I like to surf around the online world, often I will just go to Stumble Upon and read and check stuff out…
Recommended websites…
[...]Here are some of the sites we recommend for our visitors[...]……
Tumblr…
Tumblr linked to this website…
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
Links…
[...]Sites of interest we have a link to[...]……
Bing results…
While browsing Bing I discovered this page in the search results and I didn’t think it match…
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Awesome website…
[...]the time to read or visit the content or sites we have linked to below the[...]……
Looking around…
I love to look around the internet, often I will go to Stumble Upon and follow thru…
Lavoro per il domani – uno sguardo di Yesturdays ad alcuni esempi…
Notato questo esempio, via arnold halign sopra Giornale in tensione e credilo per essere estremamente informativo ed ugualmente il punto…
Bing results…
While searching Bing I discovered this page in the search results and I didn’t think it match…
Read was interesting, stay in touch……
[...]please visit the sites we follow, including this one, as it represents our picks from the web[...]……
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Links…
[...]Sites of interest we have a link to[...]……
Tumblr…
Tumblr linked to this website…
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Gems form the internet…
[...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]……
It is quite hard to find good help…
I am really regularly saying that its hard to find good honest help, but here is…
Bing results…
While searching Bing I discovered this page in the search results and I didn’t think it match…
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Links…
[...]Sites of interest we have a link to[...]……
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Visitor recommendations…
[...]one of our visitors recently recommended the following website[...]……
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
Tumblr article…
I saw a writer writing about this on Tumblr and it linked to…
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Yahoo News…
When checking out Yahoo News today I found this…
Trackback…
[…] … excellent data on this right here […]…
Weebly article…
I saw a writer talking about this on Weebly and it linked to…
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
Bing results…
While searching Bing I found this page in the search results and I didn’t think it match…
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Tumblr…
Tumblr linked to this site…
Hard Day…
It was a hard day here yesterday, so I just took to piddeling around on the internet and realized…
Useful and precise…
Its hard to find really informative and precise information but here I found…
It is quite hard to find good help…
I am really constantnly saying that its difficult to get quality honest help, but here is…
Useful and precise…
Its difficult to find really informative and accurate information but here I found…
Cool sites…
[...]we came across a cool site that you might enjoy. Take a look if you want[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
Yahoo News…
When checking out Yahoo News today I found this…
How To Routers…
I’m not sure if this site is displaying properly for me, maybe its just my browser? I’m using google chrome….
online dating site…
Hey There. I found your blog the use of msn. This is a really neatly written article. I will be sure to bookmark it and come back to read more of your helpful information. Thanks for the post. I๏ฟฝll definitely return….
cupid dating…
A formidable share, I simply given this onto a colleague who was doing a little bit evaluation on this. And he in truth purchased me breakfast as a result of I found it for him.. smile. So let me reword that: Thnx for the treat! However yeah Thnkx for …
How To Routers…
I’m not sure if this site is displaying properly for me, maybe its just my browser? I’m using google chrome….
Hard Day…
It was a hard day here yesterday, so I just took to piddeling around on the internet and realized…
News…
I was reading the Yahoo news and I saw this really interesting topic…
It is quite hard to find good help…
I am really constantnly saying that its difficult to get good honest help, but here is…
Recommeneded websites…
[...]Here are some of the sites we recommend for our visitors[...]……
Hard Day…
It was a hard day here yesterday, so I just took to messing around on the internet and realized…
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Useful and precise…
Its difficult to find really informative and precise information but here I found…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
It is quite hard to find good help…
I am really forever saying that its difficult to procure quality honest help, but here is…
Weebly article…
I saw a guy writing a lot about this on Tumblr and it linked right to…
Looking around…
I love to look around the internet, regularly I will go to Digg and follow thru…
Great website…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
News…
I was reading quickly the AOL news and I saw this quite interesting and new topic…
Weebly article…
I saw a guy talking a lot about this on Tumblr and it linked right to…
Tumblr…
Tumblr just linked to this cool site…
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
Bing results…
While searching Bing I found this page in the search results and I didn’t think it match…
Reviewer…
Hi!, I have gone ahead and bookmarked your page on Facebook so my friends can see it too. I just used your blog title as the entry in my bookmark, as I figured if it’s good enough for you to title your blog post that, then you probably would like to s…
Review…
It’s actually a great and helpful piece of info. I am satisfied that you simply shared this helpful information with us. Please keep us up to date like this. Thanks for sharing….
That’s Right!…
This is a really good blog. Good work!…
Trabalho para o amanhã – um olhar de Yesturdays em alguns exemplos…
Apenas observado este exemplo, através de jon hardvalder sobre Twitter e acredite-o para ser um tanto informativo e demasiado o ponto…
Looking around…
I love to browse in various places on the web, regularly I will go to Stumble Upon and follow thru…
Bing results…
While browsing a bit Bing and Yahoo I happily found this page in the search results and I do not think it match…
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
xtcommerce seo…
Sites appealing we have a hyperlink to…
Websites worth visiting…
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
seo is now…
should just click site…
My opinion is ……
I was examining some of your blog posts on this site and I believe this website is real informative ! Keep on putting up….
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Read was interesting, stay in touch……
[...]please visit the sites we follow, including this one, as it represents our picks from the web[...]……
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Online Article……
[...]The information mentioned in the article are some of the best available [...]……
Great website…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
Superb website…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Read was interesting, stay in touch……
[...]please visit the sites we follow, including this one, as it represents our picks from the web[...]……
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Yahoo News…
When reading a bit Google and Bing News just now I found this…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
internetagentur seo…
Sites of interest you will find there’s url to…
Gems form the internet…
[...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]……
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Iron Man 3…
I’m writing to make you be aware of what a superb encounter our girl went through reading your site. She came to find a wide variety of details, not to mention what it’s like to have a great coaching spirit to let many others easily learn about a var…
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Iron Man 3 Trailer…
I enjoy you because of your whole effort on this web page. Debby delights in conducting internet research and it is easy to see why. My spouse and i learn all concerning the dynamic medium you provide useful information via this web blog and even incre…
Another Title…
I saw this really good post today….
Hard Day…
It was quite a hard day for me today, so I decided to take to messing around a lot on the internet and rapidly realized…
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Bing results…
While browsing a bit Bing and Yahoo I happily found this page in the search results and I do not think it match…
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
News…
I was reading quickly the AOL news and I saw this quite cool and new information…
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Looking around…
I love to surf in various places on the online world, regularly I will just go to Digg and read and check stuff out…
Links…
[...]Sites of interest we have a link to[...]……
Bing results…
While browsing a bit Bing and Yahoo I happily found this page in the search results and I do not think it match…
[...] that is the end of this article. Here you’ll find some sites that we think you’ll appreciate, just click the links over[...]……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Recommended websites…
[...]Here are some of the sites we recommend for our visitors[...]……
Het werk van Yesturdays voor morgen – een blik op sommige voorbeelden…
Opgemerkt dit voorbeeld, via David Messer Leef Dagboek en geloof het om te zijn uiterst informatief en ook het punt…
It is really really hard to find enough help…
My friend is regularly but annoyingly proclaiming that truly its difficult to easily find some quality honest help, but here is…
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
Sites we Like……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Read was interesting, stay in touch……
[...]please visit the sites we follow, including this one, as it represents our picks from the web[...]……
Just Looking…
When I was surfing a bit this week end I saw a nice article concerning…
Related……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Het werk van Yesturdays voor morgen – een blik op sommige voorbeelden…
Opgemerkt dit voorbeeld, via arnold halign Tjilpen en geloof het om te zijn uiterst informatief en ook het punt…
Superb website…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
Best Links 2012…
Very interesting stuff like here. If you’re new to this site you’ll…
Superb website…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]Sites of interest we have a link to[...]……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Yahoo results…
While searching Yahoo I discovered this page in the results and I didn’t think it fit…
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Yesturdays Arbeit für Morgen – ein Blick auf einige Beispiele…
Wurde dieses Beispiel, über gezeigt jon McCormick an Facebook und glauben Sie ihm vor um zu sein extrem informativ und auch der Punkt…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
Iron Man 3…
I wish to point out my gratitude for your kindness giving support to those individuals that must have assistance with the study. Your personal commitment to passing the message throughout came to be extremely helpful and have in every case made men and…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Blogs you should be reading…
[...]Here is a Great Blog You Might Find Interesting that we Encourage You[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
Trackback Link…
[...]Here are some of the sites we recommend for our visitors[...]…
Yahoo results…
While searching Yahoo I found this page in the results and I didn’t think it fit…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Recent Blogroll Additions……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Recent Blogroll Additions……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Superb website…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
… [Trackback]…
[...] Find More: howtophp.net/index.php/2010/08/kỳ-2-design-pattern-ứng-dụng-adapto-pattern-xay-dựng-module-thanh-toan-cho-gian-hang.html [...]…
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
Websites worth visiting…
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Recommeneded websites…
[...]Here are some of the sites we recommend for our visitors[...]……
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
Related……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
… [Trackback]…
[...] There you will find 72467 more Infos: howtophp.net/index.php/2010/08/kỳ-2-design-pattern-ứng-dụng-adapto-pattern-xay-dựng-module-thanh-toan-cho-gian-hang.html [...]…
[...]The information mentioned in the article are some of the best available [...]……
[...]below you’ll find the link to some sites that we think you should visit[...]……
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
Yahoo results…
While searching Yahoo I found this page in the results and I didn’t think it fit…
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
[...]Here are some of the sites we recommend for our visitors[...]……
Visitor recommendations…
[...]one of our visitors recently recommended the following website[...]……
Useful and precise…
Its hard to find really informative and precise info but here I found…
Nice Focus….
I really like the direction you’ve decided to take this blog….
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
Digg…
While checking out DIGG today I noticed this…
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Websites worth visiting…
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Sites we Like……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Online Article……
[...]The information mentioned in the article are some of the best available [...]……
Recent Blogroll Additions……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
Read was interesting, stay in touch……
[...]please visit the sites we follow, including this one, as it represents our picks from the web[...]……
Related……
[...]just beneath, are numerous totally not related sites to ours, however, they are surely worth going over[...]……
Gems form the internet…
[...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]……
Blogs ou should be reading…
[...]Here is a Great Blog You Might Find Interesting that we Encourage You[...]……
Recommeneded websites…
[...]Here are some of the sites we recommend for our visitors[...]……
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
Useful and precise…
Its difficult to find really informative and accurate information but here I noted…
[...]the time to read or visit the content or sites we have linked to below the[...]……
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Sites You Should Check Out…
http://www.christchurchglass.getlisted.co.nz/double-glazing-retrofit...
Sites we Like……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
News…
I was reading slowly the Reddit news and info and I saw this really super cool and super fresh topic…
……
I simply wished to appreciate you again. I am not sure what I might have undertaken in the absence of the actual thoughts documented by you over my field. Previously it was an…
Sites You Should Check Out…
http://www.pitstop.getlisted.co.nz/wof-christchurch...
… [Trackback]…
[...] Read More here: howtophp.net/index.php/2010/08/kỳ-2-design-pattern-ứng-dụng-adapto-pattern-xay-dựng-module-thanh-toan-cho-gian-hang.html [...]…
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
……
Your home is valueble for me. Thanks!?…
……
its fantastic as your other content : D, regards for putting up….
Sites You Should Check Out…
http://www.demo.getlisted.co.nz/marketing-auckland...
Kỳ 2: Design Pattern – Ứng dụng Adaptor Pattern xây dựng module thanh toán cho gian hàng | How-to PHP…
I cannot WAIT to read more of this. I mean, you just know so much about this. So much of it Ive never even thought of. You sure did put a new twist on something that Ive heard so much about. I dont believe Ive actually read anything that does this subj…
Bing results…
While browsing a lot Bing and AOL I very much happily found this interesting page in the search results and I did think it would match…
Superb website…
[...]always a big fan of linking to bloggers that I love but don’t get a lot of link love from[...]……
Online Article……
[...]The information mentioned in the article are some of the best available [...]……
Recent Blogroll Additions……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
… [Trackback]…
[...] Informations on that Topic: howtophp.net/index.php/2010/08/kỳ-2-design-pattern-ứng-dụng-adapto-pattern-xay-dựng-module-thanh-toan-cho-gian-hang.html [...]…
Superb webpage…
[...] The info described inside the post are a number of the most efficient to be found [...]…
Sites we Like……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Digg…
While checking out DIGG yesterday I noticed this…
Superb link…
[...] Did you ever think about which place to go to for a weekend and end up going nowhere but wishing you would have [...]…
Not a chance……
[...] take a look at below, are selected wholly unrelated sites to ours, however, they’re most honest sources that we all use [...]…
Awesome website…
[...] ordinarily posts one or two quite interesting stuff along these lines. For anyone who is not used to this site [...]…
Best additions…
[...] and as a result we’re linking to that rudraksha beads site [...]…
Visitor recommendations…
[...]one of our visitors recently recommended the following website[...]……
Sites You Should Check Out…
http://www.demo.getlisted.co.nz/marketing-auckland...
Sites You Should Check Out…
http://www.driversday.getlisted.co.nz/v8-race-car-driving-experience...
Tumblr and Digg…
Tumblr and Digg just now linked to this super interesting site…
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
Sites You Should Check Out…
https://www.lifereader.com/psychics/tarot_meaning...
Gems from the Internet…
[...] Have you ever think of where to go to for just about any weekend and wind up going nowhere but hoping you had [...]…