Invoke doesn't seem to work on ReflectionMethod with empty array?

Question

I have the following code:

$loClass    = new ReflectionClass('SampleClass');
$loMethod   = $loClass->getMethod('doSomething');

$loMethod->invoke(array());

Let say the class looks like this:

<?php

/**
 * Sample Class
 */
class SampleClass
{
    public function __construct()
    {

    }

    /**
     * Do somehting
     */
    public function doSomething($paParams)
    {
        // do something
    }
}

I get the following error:

object(ReflectionException)#181 (7) { ["message":protected]=> string(29) "Non-object passed to Invoke()", ..

What I want to do is call a class method from string with parameters as an array (can be empty array) Can any one help me out?

Answer 1

Unless the method is static you need to pass the object instance where to call this method:

$loClass    = new ReflectionClass('SampleClass');
$loMethod   = $loClass->getMethod('doSomething');
$sample     = new SampleClass();

$loMethod->invoke($sample, array());

Check the manual page of ReflectionMethod::invoke()