What are some alternative PHP runtimes that can handle multiple languages?

One alternative PHP runtime that can handle multiple languages is HHVM (HipHop Virtual Machine). HHVM is an open-source virtual machine designed for executing programs written in Hack and PHP. It can run both Hack and PHP code, making it a versatile option for developers looking to work with multiple languages within the same runtime environment.

// Example code using HHVM to run both Hack and PHP code
<?hh // strict

function greet(string $name): void {
  echo "Hello, $name!";
}

greet("World");