Not a bug, it should probably be documented that invoke doesn't support calling the underlying method with by-ref arguments and invokeArgs should be used instead.

invokeArgs() works:

<?php
class Foo
{
    public function bar(&$baz)
    {
    }
}

$array  = array();
$object = new Foo;

$method = new ReflectionMethod('Foo', 'bar');
$method->invokeArgs($object, array(&$array));
?>

<laruence> a work fix for bug60140(invoke, reference) http://pastebin.com/ZYc4yy8P
<laruence> but not sure,  does it can cause some side-effect. 
<laruence> however,  the ext/reflection tests all passed
<johannes_> i doubt it is correct
<johannes_> you're setting the isref flag but you might have a copy
<johannes_> so do   function test(&$param) { $param = 23, } $r = new Reflectionfunction("test"); $a = 
42; $b = &$a; $r->invoke($a); 
<johannes_> and then the result is wrong
<johannes_> the way to fix it is to take all paramters by-ref by default and then separate them if 
needed
<johannes_> which has many many many other issues
<laruence> en , yes,  if that way,  $ref->invoke("value") will be broken
<johannes_> thanks for trying to fix it (it's an old issue, and it's good to have "new" people 
thinking about it, sometimes there are new solutions, sometimes these might work)

The status of this is "Wont Fix", which was fine when this was a regular bug, but when changed to a doc bug, the status should have been changed to high priority. This "problem" was a change in behavior to PHP sometime around version 5.2-5.3, and debugging it can be quite a bear. 

The Note on the documentation page says that you can pass references to this function, but that is definitely not true. Please change the note to read something like:

Note: You cannot pass references to functions using "invoke". Use invokeArgs instead if you need to pass referenced variables.