thinkphp3.2路由启动无效

Question

代码如下：
return array(
//'配置项'=>'配置值'

//启用路由功能
'URL_ROUTER_ON' => true

);return array(
//'配置项'=>'配置值'

//配置路由规则：一个数组元素就是一个路由规则
'URL_ROUTER_RULES' => array(
    'posts/:year/:month/:day' => 'Index/index',
    'posts/:id' => 'Index/index',
    'posts/read/:id' => '/posts/:1'
)

);