Investigate method arguments with PHP Reflection API

gistfile1.txt

$my_class = new ReflectionClass('MyClass');

$method = $my_class->getMethod("__construct");

$params = $method->getParameters();

foreach ($params as $param) 
{
  print argData($param);
}

function argData(ReflectionParameter $arg) 
{
  $details = "";
  $name = $arg->getName();
  $class = $arg->getClass();
  
  if (! empty($class)) 
  {
    $classname = $class->getName();
    $details .= "\$$name must be a $classname object\n";
  }

  if ($arg->isPassedByReference())
  {
    $details .= "\$$name is passed by reference\n";
  }

  return $details;
}