(PHP 5 >= 5.1.3)
ReflectionClass::newInstanceArgs — Creates a new class instance from given arguments.
$args
  ] )Creates a new instance of the class, the given arguments are passed to the class constructor.
Returns a new instance of the class.
Example #1 Basic usage of ReflectionClass::newInstanceArgs()
<?php
$class = new ReflectionClass('ReflectionFunction');
$instance = $class->newInstanceArgs(array('substr'));
var_dump($instance);
?>
The above example will output:
object(ReflectionFunction)#2 (1) {
  ["name"]=>
  string(6) "substr"
}
A ReflectionException if the class constructor is not public.
   A ReflectionException if the class does not have a constructor
   and the args parameter contains one or more parameters.