Description:
------------
A pre-defined array passed to in_array() within switch{case( interpreted as NULL for both flat and multi-dimensional arrays.

php config:
Configure Command =>  './configure'  '--with-openssl' '--with-pgsql' '--with-tidy' '--with-zlib' '--with-curl' '--with-apxs2=/usr/sbin/apxs' '--with-gd' '--with-png-dir=/usr' '--with-jpeg-dir=/usr' '--with-freetype-dir=/usr' '--with-zlib-dir=/usr'


Reproduce code:
---------------
$arrChoices = array('numberfood' => array('apple','pie',5) , 'monkeys' => array('frank','chimpanzee'));
function notArraysWhat ($i) {
   switch ($i) {
      case (in_array($i , $arrChoices['numberfood'])):
         echo "$i is either a number or a food.\n";
         break;
      case (in_array($i , $arrChoices['monkeys'])):
         echo "$i is a monkey, or smells like one.\n";
         break;
   }
}
notArraysWhat('pie');

Expected result:
----------------
STDOUT: pie is either a number or a food.

Actual result:
--------------
STDOUT: Warning: in_array() expects parameter 2 to be array, null given in /export/servers/ETG/ContentCollection/cc/testing.php on line