Test script for https://github.com/facebook/hhvm/issues/2057

test.php

<?php

function with_array(array $a) { }
function with_callable(callable $c) { }
function with_class(Exception $e) { }
function with_primitive($p) { }

if (strstr($argv[1], '::')) {
  $param= new ReflectionParameter(explode('::', $argv[1]), 0);
} else {
  $param= new ReflectionParameter($argv[1], 0);
}

if ($param->isArray()) {
  echo "Array\n";
} else if ($param->isCallable()) {
  echo "Callable\n";
} else if (null !== ($class= $param->getClass())) {
  echo "Class ", $class->getName(), "\n";
} else {
  echo "Primitive\n";
}