What is this Course ?

• Every page on the web that you visit is built using a sequence of separate instructions, one after another. Your browser (Chrome, Firefox, Safari, and so on) is a big actor in translating code into something we can see on our screens and even interact with. It can be easy to forget that code without a browser is just a text file — it’s when you put that text file into a browser that the magic happens. When you open a web page, your browser fetches the HTML and other programming languages involved and interprets it.
• HTML and CSS are actually not technically programming languages; they’re just page structure and style information. But before moving on to JavaScript and other true languages, you need to know the basics of HTML and CSS, as they are on the front end of every web page and application.
• In the very early 1990s, HTML was the only language available on the web. Web developers had to painstakingly code static sites, page by page. A lot’s changed since then: Now there are many computer programming languages available.
• So, HTML formats a webpage and CSS defines how that formatting should be displayed. Sounds like that is all we need to make a nice website, so what is PHP for? I am glad you asked! PHP, as you recall, stands for PHP Hypertext Preprocessor and it does what its name implies: it preprocesses hypertext.
• But what does it mean to preprocess hypertext? Basically, PHP scripts run on the web server before the webpage is sent to your browser. It can be used to assemble an HTML document on the fly from a number of different pieces, write it all into cohesive HTML or CSS and send it to your web browser for display.
• PHP is very convenient for making page templates for a website, so that if you want to change a common element of a site such as the header or navigation, you only have to change it once instead of on every page of the entire website. This significantly lowers the chances of making a mistake or missing an instance that needs to be updated.
• So, there it is in a nutshell. HTML is the basic and original programming language for web designers while CSS and PHP have come along over time to improve the ease of creating webpages and increase the speed of websites. I hope this has been informative for you and not too terribly boring or nerdy.