1. 添加自定义函数：

    function class_field($classid, $field) {
    global $empire, $dbtbpre;
    $classid = (int)$classid;
    $arr = array('classname', 'bname', 'classimg', 'classpagekey', 'intro');
    if (!in_array($field, $arr)) {
        return FALSE;
    }
    if (!$classid || !$field) {
        return FALSE;
    } else {
        $class_sqls = $empire->fetch1("select " . $field . " from " . $dbtbpre . "enewsclass where classid=" . $classid);
        return $class_sqls[$field];
    }
}

  2. 模板中调用：

    <?=class_field(栏目id, '字段名称')?>