PHP
<?php
The PHP language is used for a wide variety of features in websites, from login systems to admin panels. The use of PHP allows for a secure and dynamic webpage.

The contact button at the bottom of this page relies on PHP to allow me to receive your messages, the live chat button also uses PHP as well as MySQL to display the messages.
?>
HTML
<html>
HTML is the bones of webpages, it provides structure and layout and with the introduction of HTML5 many more things can be accomplished. HTML relies heavily on other languages to provide a professional webpage, specifically CSS.
</html>
CSS
.css{
Using CSS allows for a webpage to be styled and displayed properly, CSS works closely with HTML to provide different properties to 'boxes', such as colour and size. Most of the design of a website is reflected through CSS.
}
MySQL
Information for dynamic webpages will be stored in a MySQL database, this can range from customer accounts information to paragraphs on the site. MySQL provides a language to connect a website to a database, with a bit of help from PHP.

The recent introduction of MySQLi also provides more secure options for developers. This is a key component in building login systems and admin panels.

jQuery
<script>
The use of the jQuery framework in websites opens hundreds of new options to developers, from live content on a site to true usabiltiy.

jQuery allows for the user to see content update live, without refreshing the page. This is how Facebook and Twitter posts work, you don't have to reload the page, the posts just appear. jQuery does this and it does it well.
</script>

JavaScript
<script>
Almost every website will use some form of JavaScript, without it a website is barely interactive, it allows for 'things' to happen after clicking buttons.

It's the reason you're reading this paragraph, because you clicked on the 'JS' tab, which ran some JavaScript code to switch to this paragraph. There's also several adaptations of JavaScript, which are nearly a new language in their own right, jQuery is one of these and works in a similar way to Ajax, to provide live, dynamic content.
</script>

The above shows my web-related skills, the languages I can confidently write and create websites with. These languages allow me to achieve anything you see on other webpages, I've described the uses of each language briefly, if you're interested in how a website is stuck together.

If you're interested in having a website built for you, all the code I write will belong to you, the code can also be commented so that you can understand it or have other developers work.