How to safely execute user-submitted PHP code [duplicate]

Answer 1

Have a look at Runkit_Sandbox: http://php.net/manual/en/runkit.sandbox.php

Instantiating the Runkit_Sandbox class creates a new thread with its own scope and program stack. Using a set of options passed to the constructor, this environment may be restricted to a subset of what the primary interpreter can do and provide a safer environment for executing user supplied code.

Answer 2

I always wondered how good it would be to have a Cloud IDE where i could host all my PHP files, test it, share it etc. basically it should be able to do everything which i do in my Computer. and until recently i stumbled upon a very nice Cloud IDE called Kodingen. it is such a useful Cloud Application and so handy at times. however below is the list of some of the services which offers you to run PHP code.

• http://kodingen.com/
• http://www.codr.cc/
• http://www.chopapp.com/
• http://www.amyeditor.com/
• https://codeanywhere.net/
• http://www.coderun.com/
• http://shiftedit.net/