Sub-theme is a powerful way to create a new theme from an existing theme. If you are going to do major changes like templating and hook alteration in theme. It is preferable to build a seperate sub-theme by using existing theme instead of doing direct changes in original theme.
Web Service is a method that is used for the purpose of exchanging the data with other web application via the web or cloud using HTTP,XML, SAOP etc. A main advantage of this is that it allows for communicate data between different languages.
We can create the pdf file using iText library. The iText library is supports the generation of HTML, PDF, RTF, and XML documents. It contains classes to generate the PDF file in different font, add water marks and to generate table in the PDF file
RSS feed is best solution for getting backlinks to your website and for increasing your website traffic. In this article you'll learn how to create your own custom RSS feeds using PHP and MySQL.