Description:
------------
Arrays get scrambled when using func_get_args(). See code sample below.

Test script:
---------------
<?php
function foo(/* ... */) {
  $arguments = func_get_args();
  if(isset($arguments[0]['key'])) {
    var_dump($arguments[0]);
    var_dump($arguments[1]);
    echo "You see that \$arguments[0] is a string, while \$arguments[1] is an array.\n";
    echo "So this code should never get executed.\n";
  } else {
    echo "Correct behaviour";
  }
}

foo("some string", array("key" => "value"));

Expected result:
----------------
Script output:
Correct behaviour

Actual result:
--------------
Script output:
string(11) "some string"
array(1) {
  ["key"]=>
  string(5) "value"
}
string(1) "s"
You see that $arguments[0] is a string, while $arguments[1] is an array.
So this code should never get execute.