PHP is a server side scripting language. This means that it is processed by the server before it is sent to the browser. It is considered by many to be one of the most powerful server side languages and allows for a large degree of interaction and application design.

ASP is a server side scripting language. This means it is designed to allow the server to process requests. ASP is based around the VBScript language and has a very similar syntax to Visual Basic.

JavaScript provides an excellent option for those looking to add a little extra interactivity to their website. Through proper use it can also be used to improve your users experience. JavaScript offers many benefits including support for AJAX in modern day browsers which allows for browsers to communicate back and forth with the server without the need for reloading the browser.