General View of the web structure offered

The figure fig:93 demonstrates the hole structure of the proposed web application.
A page php has seven attributes.

• Title
• Description
• Keywords
• Charset
• Style (CSS)
• The content
• The scheme

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The first three and the sixth should be changed for each page. The charset and the CSS style should be modified only once for all the webpages. The scheme if you do not have basic HTML knowledge leave it intact. So any page contains :

• A CSS file
• A Scheme

As stated before the CSS file has a lot of attributes commented and they can/should modified only once for the hole project. A scheme contains :

• A Header inc file
• A Left inc file
• A Right inc file
• A Content (center) inc file
• A Footer inc file

The header and the footer should be modified only once for the project unless you want to include there the menu of your web site so you have to update that portion of site every time that you add a page. The same is valid for left and right portions. In all the include (inc) files you can write HTML code but you are not obligated, you can use a subclass of HTML for those pages if you do not know HTML. The HTML subclass that you need to learn is this :

• <br>
This tag is the breakline or simpler the 'enter' key on the text editor in order to change a line. Inserts a single line break.
• <div align="POS"> ... </div>
A simple way to align your text or your images. POS can have left, right, center as values.
• <img src="images/MyImage.png" alt="My image description">
The easiest way to add an image. The image must be placed at the 'images' directory. The alt attribute is fundamental because search engines read this attribute and index correctly your images. Remember Google and Yahoo have image search option, so it is highly recommended that you use the alt attribute and make sure that the image filename has a meaning. For example :
<img src="images/LearnEnglishin21Days.png" alt="Learn English in 21 Days Logo">
Using the alt option to the images will help you increase your site traffic.
• <font class="TEXT-CLASS"> ... </font>
Before writing any type of text you need to define it's aspect. Use this tag to format it. The CSS contained in this e-book has these TEXT-CLASS values : small, normal, big, very big. If you want to change the aspect of the TEXT-CLASS just modify the given CSS.
• <a href="PAGE-URL" class="LINK-CLASS">PAGE-NAME</a>
With this code we can add links on our web page. LINK-CLASS values : small, normal, big, very big, menu.
Internal link example :
<a href="secondpage.php" class="normal">click here to go to the second page</a>
External link example :
<a href="http://www.yahoo.com" class="normal">click here to go to Yahoo</a>
If you want to change the aspect of the LINK-CLASS just modify the given CSS.

The content inc file has to be modified for every new page and the reason is obvious, new page means new content. For all the inc files you can use kompozer to generate complex HTML code and paste the generated code into the associated inc file. Please note that each content inc file should contain the product link like the listing "Product link at content inc page". Of course if the content page won't have any product the product link should not exist like the AboutAuthor.inc

<!--START 'BUY NOW' BUTTON-->
<?php
//MODIFY Button Link For A Pruduct. (Choose A 
Product File)
include 'Products/productHX0001.php';

//DO NOT MODIFY
print $Product['ButtonLink'];
?>
<!--END 'BUY NOW' BUTTON-->

Product link at content inc page

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So a content inc page contains :

• One or more product links

Note at this point that if you want on one content page add two products you can do it by adding two Product links like the listing "Two Product links at the same content inc page"

<!--START 'BUY NOW' BUTTON-->
<?php
//MODIFY Button Link For A Pruduct. (Choose A 
Product File)
include 'Products/productHX0001.php';

//DO NOT MODIFY
print $Product['ButtonLink'];
?>
<!--END 'BUY NOW' BUTTON-->


<br><br>

<!--START 'BUY NOW' BUTTON-->
<?php
//MODIFY Button Link For A Pruduct. (Choose 
A Product File)
include 'Products/productHX0002.php';

//DO NOT MODIFY
print $Product['ButtonLink'];
?>
<!--END 'BUY NOW' BUTTON-->

Two Product links at the same content inc page

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A product has these attributes :

• Product Name
• Product Price
• Product Currency
• Product link (filename)
• Product BUY NOW code
• Product Download Message
• Product Thanks Message
• Product Error Message
• Product Return To Homepage
• Filename of the product, corresponds at the product id

The first five attributes must be modified for each new product. The same is valid for the filename of the product which must be unique for each product (product id). The attributes 6-9 can be the same for each product if we want. Finally a web project has the settings.php file. The settings file contains the PayPal account settings and the preferences of the seller. All the attributes of the settings file should be edited only once since they are the same for all the products.

• TitlePage. The page title of the secret download page.
• file_path. The secret path of your downloads
Example : '../../stats/59M/AA4446669033/556622
/abggretttt77/jjMMn54VrtP/xyz321/';
• referer_url
Example : www.mysite.com/06Demo/PayPal/Code/pdthtml.php
• enable_download_counter
• Max_downloads
• enable_log
• log_file_name
• auth_token_real. The real seller token
• sandbox_mode. True if you want test mode, false if you want real mode.
• auth_token_sandbox. The virtual seller token
• completely_failed_message

Notice that the file_path folder must be writable. If you have a Linux web server make sure that that folder is CHMOD 777 or 755. This can be posted with a ftp client like filezilla. If you have a Windows hosting plan then you should have a writable folder.
Usually this folder is called 'public'.
So the file_path this time should become :
'../../public/59M/AA4446669033/556622/abggretttt77/jjMMn54VrtP/xyz321/'

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fig:93 General scheme of our Web Application