A HTTP Cookie is a small piece of data sent from a website and stored in a user’s web browser while the user is browsing that website. Every time the user loads the website, the browser sends the cookie back to the server to notify the website of the user's previous activity. Cookies were designed to be a reliable mechanism for websites to remember information

HTML (HyperText Markup Language) is the standard markup language used to create web pages. Web browsers read HTML files and render them into visible or audible web pages. At this time, the capabilities of HTML was fairly simple with you only being able to display text, images, lists and hyperlinks to another web page.

The creation of HTTP

PHP (Hypertext Preprocessor) is a server-side scripting language designed for web development but also used as a general-purpose programming language. As of January 2013, PHP was installed on more than 240 million websites. PHP code can be simply mixed with HTML code, or it can be used in combination with various templating engines and web frameworks. PHP code is usually processed by a PHP interpreter, which is usually implemented as a web server's native module or a Common Gateway Interface