The Apache HTTP server and the Drupal packages remain unchanged. However, instead of loading the libphp.so extension module, it incorporates mod_wasm.so. In addition, instead of relying on the traditional PHP interpreter, it utilizes a PHP build in the WebAssembly binary format.
- No errors (even fatal) from the Wasm module will bring down Apache HTTPD. - mod_wasm's code base is small enough to inspect thoroughly and test thoroughly to ensure it is secure - Indeed you will now have to trust the embedded Wasm runtime (wasmtime as of today). As a naïve analogy, this is the equivalent of trusting a virtual CPU(Wasm)+OS(WASI), which gets tested in thousands of other scenarios than the ones used in mod_wasm and issues get fixed and corrected asap.