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Is it possible to create PHP extensions with Haskell?
Usually PHP extensions are written using C. Is using Haskell FFI to provide functionality for a stub C extension possible (or even a good idea)?
What are the caveats to such an approach? Does Zend perform some magic in the background that would disrupt such a scheme?
You can certainly do this, though I’m not sure anyone has tried. Haskell interoperates with C via its FFI mechanism, and you can certainly:
so if you can call C from PHP, and that C calls Haskell, you’re in business.
Why would you want to do this? Faster, safer, simple code for your core algorithms or safety-critical code, perhaps. Or to take advantage of say, a parallel or multicore server backend via Haskell.