What Is PHP and JavaScript?

What Is JavaScript?

JavaScript is a scripting language and it's one of the most popular programming languages in use today. It's used to create interactive web pages and web applications, desktop, mobile and server applications. JavaScript was originally developed by Brendan Eich in 1995.

There are two major versions of JavaScript: ECMAScript 3 (ES3) and ECMAScript 5 (ES5). ES5 is more advanced than ES3 because it has many additional features such as classes, modules, closures and new functions such as Array#forEach() that weren't present in ES3

When Are PHP and JavaScript Used?

You've probably heard the term "client-side" and "server-side" before. These terms describe how your web applications work.

The client is the browser that users use to access your site, like Chrome or Firefox. The server is a computer that runs software that delivers content to a client, like Apache or IIS.

JavaScript is used on the client side to provide interactivity in the browser; for example, by making buttons move when you click them or by making text change color when you hover over it with your cursor. When you use JavaScript on a webpage, it's called client-side scripting because it runs in the user's browser (the "client").

PHP runs on an application server that produces dynamic web pages on demand; these are called server-side scripts because they run on servers instead of browsers like JavaScript does.

How Are JavaScript and PHP Different?

Now that you understand the basics of PHP and JavaScript, let's take a look at how they stack up against each other.

PHP is server-side only; it runs on a web server and not in the browser. JavaScript, on the other hand, is client-side only; it runs in your browser but not on a web server (unlike PHP).

Because of this difference in functionality between PHP and JavaScript you can't run both languages on one page; however, many developers have found ways to use them together seamlessly. For example: when visitors come to your site they might see some content that changes based on what type of device they're using (e.g., desktop vs mobile), if they're logged in or not etc—this means you need to write code for each scenario which means writing different code every time! By using both languages separately instead (where appropriate) we can minimize redundancy across our codebase without sacrificing functionality because each language serves its own purpose best within those contexts."

PHP and JavaScript are similar but also very different languages.

PHP and JavaScript are similar but also very different languages.

PHP is a scripting language and JavaScript is a programming language.

PHP, which stands for Hypertext Preprocessor, is a server-side language. That means that PHP works on the back end of your website to create dynamic content. JavaScript on the other hand is a client-side language that enables you to add interactivity to web pages by using code that runs directly in your browser window.