php_app - PHP eval server for Erlang/OTP

Requires Unix/Linux due to dependency on `ps` command to test PHP memory usage.

To compile:
$ make

To run:
$ ./run.sh

Example usage:
  php:eval("echo 'Hello, World!';").
  php:eval("return 1+2;").
  php:eval("return array(1,'foo',3.14);").