function error_handler($code, $message, $file, $line)
{
    if (0 == error_reporting())
        return;
        
    throw new ErrorException($message, 0, $code, $file, $line);
}
function exception_handler($e)
{
    // ... normal exception stuff goes here
    print $undefined; // This is the underlying problem
}
set_error_handler("error_handler");
set_exception_handler("exception_handler");
throw new Exception("Just invoking the exception handler");

function exception_handler($e)
{
    try
    {
        // ... normal exception stuff goes here
        print $undefined; // This is the underlying problem
    }
    catch (Exception $e)
    {
        print get_class($e)." thrown within the exception handler. Message: ".$e->getMessage()." on line ".$e->getLine();
    }
}

class test {
    function __construct() {
        echo "Construct\n";
    }

    function greet() {
        echo "Hello World\n";
    } 

    function __destruct() {
        echo "Destruct\n";
        throw new Exception( 'test' );
    }
}

$test = new test();
$test->greet();