Description:
------------
Function 'call_user_func_array' does not return FALSE when $param_arr is not an array.

Test script:
---------------
<?php

function testFnc() {
       echo "testFnc() was called";
       return true;
}

echo "\nAbout to call: call_user_func_array()\n";
$result = call_user_func_array('testFnc', "not an array");

echo "\nAbout to call: var_dump()\n";
var_dump($result);

?>

Expected result:
----------------
$result should be FALSE (not NULL) according to the documentation page http://php.net/call_user_func_array.

Actual result:
--------------
About to call: call_user_func_array()
<br />
<b>Warning</b>:  call_user_func_array() expects parameter 2 to be array, string given in <b>[...][...]</b> on line <b>8</b><br />

About to call: var_dump()
NULL