![Creating a Virus with PHP](https://images.ctfassets.net/vzl5fkwyme3u/1Ake3wrxwAyQSMs0amgYmG/79bd99b12402c71afb4f2290c5962daa/virus.png?w=1000)
In his talk, “[Writing Viruses for Fun, Not Profit](https://beta.nomadphp.com/video/220/writing-viruses-for-fun-not-profit),” **[Ben Dechrai](https://twitter.com/bendechrai)** (after making the viewer take a pledge to only use this knowledge for good and not evil) walks through how many viruses operate, and just how easy it is to build your own self-replicating virus in PHP.
The danger of many of these viruses according to Ben is that the most dangerous viruses often escape detection by not looking like a virus. Instead they encrypt their code to hide their true intent, while also constantly adapting and evolving.
Perhaps even more dangerously, they act like they’re benign and don’t actually do anything - often times laying dormant until called upon by the malicious actor.
It's 2018, and you're a top-notch modern web developer, with a load of knowledge and tools right there at your disposal: Google and StackOverflow, debugger with a GUI, IDE with autocomplete, you name it. Occasionally, though, you still find yourself in a plain old text console on a remote server, or you have to do something without IDE, or there is no network connection... In such cases it might be helpful to feel comfortable in a simple terminal. In this post I'm going to list some switches for the PHP command that you can use to get information and some utilities.
### Getting basic information about PHP
$ php -i
PHP Version => 7.2.10-0ubuntu1
System => Linux awesome 4.18.0-10-generic #11-Ubuntu SMP Thu Oct 11 15:13:55 UTC 2018 x86_64
![Oprah: You Get Extension! Everyone Get Extension!](https://i.imgflip.com/2kug6u.jpg)
Ever wanted to publish your own extension for PHP but stopped by the lack of C language background? Well, maybe it's time for another take. [Zephir language](https://zephir-lang.com/en) is targeted at people like you.
If you follow this link, you will find these words that say a lot about this project:
> Zephir, an open source, high-level language designed to ease the creation and
maintainability of extensions for PHP with a focus on type and memory safety.
Its syntax highly resembles that of PHP, only there's no dollars scattered around your code. Dollar signs, I mean, the PHP `$variables`. You only can create object oriented extensions, and all the classes written in Zephir must be namespaced. A different and stricter type system exists in Zephir, which allows for transpiling the code you write, into a real C extension.