What is a PHP3 file? The PHP3 extension is used for PHP 3 Web Page files, which fall into the categories of Developer Files and Dangerous Files, which comprise a collection of 1252 files. PHP3 file support extends to various operating systems, including Windows, Mac OS and Linux., This guide will explain what PHP3 files are, how you can open them, and how to convert them if needed. We'll also introduce some helpful programs that make it easy to manage these files., We'll explain what exactly a .php3 file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .php3 files into different formats, we'll give you some tips on how to do that too., PHP: Hypertext Preprocessor 3.0, often simply referred to as PHP, is a general-purpose scripting language that is particularly suited for web development. Initially released in 1998, it enables dynamic content on web pages, allowing developers to embed PHP code directly into HTML., PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. With our online "PHP Tryit" editor, you can edit the PHP code, and click on a button to view the result., .