Definition: Code.php3 is a PHP script file extension used to create static HTML pages, allowing developers to easily embed JavaScript code into their web applications without having to learn complex HTML syntax. The specific definition of "code.php3" varies based on the context. In some cases, it could be called a .php file that includes some JavaScript or other scripting languages like PHP and JavaScript. Other uses may include serving static HTML pages with dynamic content. The term "PHP" refers to the language used for web development and includes many libraries and frameworks for building web applications.