gistfile1.php

<?php

function isObject(&$object) {
    if (isset($object) && is_object($object)) {
        if (!empty($object)) {
            return true;
        }
        return false;
    }
    return false;
}

function isInstanceOf(&$object, $className) {
    return (isObject($object) && ($object instanceof $className));
}

// )))

?>