AJAX Help Needed

[jabbawest]

I have JQZoom and JQLightbox installed and I keep receiving the following php error, that may or may not be causing the occasional 500 error.

[17-Aug-2010 08:25:01] PHP Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of in_array(). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file in D:\Hosting\999999\html\includes\classes\class.ajax.php on line 389

and here is what I see from line 377-399 in class.ajax.php.
Should I try to, as suggested in the log, set the return false; to return true; ??

function recursiveInArray($needle, $haystack) {
        foreach ($haystack as $key => $stalk) {
            if (($key === $needle) || ($needle === $stalk) || (is_array($stalk) && $this->recursiveInArray($needle, $stalk))) {
                return true;
            }
        }
        return false;
    }
}

function print_nice($elem,$max_level=10,$print_nice_stack=array()){
    if(is_array($elem) || is_object($elem)){
        if(in_array(&$elem,$print_nice_stack,true)){
            echo "<font color=red>RECURSION</font>";
            return;
        }
        $print_nice_stack[]=&$elem;
        if($max_level<1){
            echo "<font color=red>nivel maximo alcanzado</font>";
            return;
        } 

Thank you