Php (Hypertext Preprocessor) is the leading Open Source language for building creative functionality into websites. Php is a server-side language, meaning the Php is executed as you arrive at the website and dynamically creates the HTML for you to view the page. For instance, it is Php which enables websites to recognise you and automatically sign you in, or process your ecommerce purchase or a myriad other functions. Many large websites are created in Php, including Facebook, Wikipedia and Flickr.
At wdb, we create Php code to achieve the needs of our clients and build upon the two, key Content Management Systems we use (Drupal and Wordpress), which are both written in Php.