Test your PHP code online

I find this nice and usefull tool online where you can test online you PHP code without uploading it on your server:
writecodeonline.com/php/ I found it a very useful tool for all developers, experienced and not, that wants to test their code before placing it in production.
On the same webstie it’s also posssible to test javascript code.
If you know any other similar website also for other scripting/programming language, please leave a comment here below!